CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

We know The Roots are equal,So the value of D would be 0 And Then we would Use the Formula D(square)-4ac Formula...After putting The values ,We would get -4 As the value of k

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Mohd Sharim 5 years ago

-4

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If equation k x_2y=3 and 3x+y=5 present two intersecting line at unique point than value of k

Posted by Amit Kumar Yadav 5 years ago

CBSE > Class 10 > Mathematics

1 answers

A K47 5 years ago

K≠ -6

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tan(A+B)=√3 tan(A_B)=1 √3

Posted by Amit Kumar Yadav 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Yash Bansal 5 years ago

Tan(A+B)=60-----(1)( Tan60=√3)-(2) Tan(A-B)=30 Now using elimination method solve equation first and second So you find value of A=45 And value of B=15 OK

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if the point a one and manage to be 2 and 3 c and 2 and -4 and -3 form a parallelogram then find the value of a and height of parallelogram taking a big bass

Posted by Vivek Yadav 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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Example II ka page number 200 ka solution

Posted by Vivek Yadav 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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How to find Assumed mean

Posted by Ashita Nadiger 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Prerna Mishra 5 years ago

The assumed mean takes a ballpark guess at the mean , then uses math to calculate a number close to the mean. It is assumed because it is not an actual mean calculation.

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Circle chapter top 100 questions

Posted by Baktaawar Rajput 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Mansi Mishra 5 years ago

Important 2 Marks Questions for Class 10 Maths Board are as follows- Question 1- Find the value of k for which the roots of the quadratic equation 2x2+kx+8=0, will have equal value. Question 2- Determine the AP whose third term is 5 and seventh term is 9. Question 3- If any point is equidistant from the points (a+b, b-a) and (a-b, a+b), prove that bx = ay. Question 4- If the line segment joining the points A(2,1) and B (5,-8) is trisected at the points P and Q, find the coordinates of P. Question 5- If, from an external point P of a circle with centre O, two tangents PA and PB are drawn such that ∠BPA=120, then show that OP = 2PA. Question 6- Prove that the tangent drawn to a circle at the end points of a diameter are parallel to each other. Question 7- Find the value of p for which the numbers 2p-1, 3p+1, 11 are in A.P. Hence find the numbers. Question 8- Find the coordinates of the points of trisection of the line segment joining the points A (7,-2) and B (1,-5). Question 9- Find the coordinates of the point on x-axis, which is equidistant from the points (-2,5) and (2,-3). Question 10- A circle touches all the four sides of a quadrilateral ABCD. Prove that AB + CD = BC + DA Question 11- Which term of the A.P. 8, 14, 20, 26, …….. Will be 72 more than its 41st term? Question 12- A line intersect the y-axis at the points P and Q respectively. If (2,-5) is the midpoint of PQ, then find the coordinates of P and Q. Question 13- Solve for x: 43–√x2+5x−23–√=0 Question 14- Prove that the perpendicular drawn from the point of contact to the tnagent, passes through the centre of the circle. Question 15- Show that in two concentric circle, is bisected at the point of contact. Question 16- Find the ratio in which the point (-3,k) divides the line segment joining the points (-5,-4) and (-2,3). Hence find the value of k. Question 17- If the nth term of an A.P. is given by tn= 3n + 4, find the common difference of the A.P. and the sum of its first five terms. Question 18- In the figure below, the radius of incircle of ΔABC of area 84 cm2 is 4 cm and the lengths of the segment AP and BP into which side AB is divided by the point of contact are 6 cm and 8 cm. Find the lengths of the sides AC and BC.

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A metallic spherical shell of internal and external diameter 6 cm and 10 cm respectively, is melted and recast into the form of a cone of base diameter 6cm. The height of the cone is???

Posted by Tanvi @1201 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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Give me all formula of this book

Posted by Manish Yadav 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Manish Yadav 5 years ago

Wrong ans

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Mansi Mishra 5 years ago

Polynomials: (i) (a + b)2 = a2 + 2ab + b2 (ii) (a – b)2 = a2 – 2ab + b2 (iii) a2 – b2 = (a + b) (a – b) (iv) (a + b)3 = a3 + b3 + 3ab(a + b) (v) (a – b)3 = a3 – b3 – 3ab(a – b) Polynomials: (i) (a + b)2 = a2 + 2ab + b2 (ii) (a – b)2 = a2 – 2ab + b2 (iii) a2 – b2 = (a + b) (a – b) (iv) (a + b)3 = a3 + b3 + 3ab(a + b) (v) (a – b)3 = a3 – b3 – 3ab(a – b) (vi) a3 + b3 = (a + b) (a2 – ab + b2) (vii) a3 – b3 = (a – b) (a2 + ab + b2) (viii) a4 – b4 = (a2)2 – (b2)2 = (a2 + b2) (a2 – b2) = (a2 + b2) (a + b) (a – b) (ix) (a + b + c) 2 = a2 + b2 + c2 + 2ab + 2bc + 2ac (vi) a3 + b3 = (a + b) (a2 – ab + b2) (vii) a3 – b3 = (a – b) (a2 + ab + b2) (viii) a4 – b4 = (a2)2 – (b2)2 = (a2 + b2) (a2 – b2) = (a2 + b2) (a + b) (a – b) (ix) (a + b + c) 2 = a2 + b2 + c2 + 2ab + 2bc + 2ac

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If tanθ = 8/15, find the value of cosθ

Posted by Pearl ? 5 years ago

CBSE > Class 10 > Mathematics

5 answers

Saiyam Jain 5 years ago

Cos 15/17 h =17

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Shadow Vector 5 years ago

15/17

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Santy Baralu 5 years ago

tan = perpendicular / base its mean p = 8 and b = 15 while by hypotenus h*2= p*2+ b*2 h*2 = 15 *15 + 8*8 h*2 = 225 + 64 h*2 = 289 h = under root 289 so h = 17

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Ayush Gupta 5 years ago

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Pawani Singla 5 years ago

cosθ = 8/17

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X^2-x-a(a+1)=0

Posted by Jay Sharma 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Shadow Vector 5 years ago

What's the question bro? I am unable to understand.

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Aryabhatta's contribution in the methods of drawing circles

Posted by Anshika Mittal 5 years ago

CBSE > Class 10 > Mathematics

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Prove that: √ 1- Sin theta /1+ Sin theta = 1/(Sec theta + Tan theta)

Posted by Pearl ? 5 years ago

CBSE > Class 10 > Mathematics

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What is the area of the kite formed by two perpendicular sticks of length 6cm and 8cm?

Posted by Devika Sasidharan 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Pawani Singla 5 years ago

1/2 × d1 × d2 = (6×8)/2 = 24cm²

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Tips to prepare maths for board exam.

Posted by Shristi Giri 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Sahil Giri 5 years ago

Ap iss year exam da raha ho

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Sahil Giri 5 years ago

First - complete NCERT Second- Examplier book Third- important question Fourth- sample paper

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Ex 8.4 question no. 5

Posted by Shubham Singh 5 years ago

CBSE > Class 10 > Mathematics

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Ex 8.2 answers

Posted by Aditya Devatwal 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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Cot theta +cosec theta -1/cot theta -cosec theta +1 = 1+cos theta / sin theta

Posted by Pratiksha Pandey 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Salman Sayed 5 years ago

Jai jai deva tumhi dena saath hamaara

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How to find the ratio of volumes of solids

Posted by Devananth P.G 5 years ago

CBSE > Class 10 > Mathematics

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In figure, AB is a chord of the circle and AOC is its diameter such that ∠ACB = 50°. If AT is the tangent to the circle at the point A, then find ∠BAT

Posted by Aman Dhoundiyal 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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The curved surface area of cylindrical pillar is 264m and its volume is 924m then the height of pillar is

Posted by Ayush Mishra 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Aman Dhoundiyal 5 years ago

Vsa aur vol ko equal rakh do

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What is rational number...

Posted by Chirag Agrawal 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Khushi Shokeen 5 years ago

The numbers which can be written in the form of p/q where p and q are integer and q is not=to 0

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Mayank Choudhary 5 years ago

Fraction which is in from of p upon q and q does not c equal to zero

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Project file

Posted by Trisav Dhiman 5 years ago

CBSE > Class 10 > Mathematics

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The cost of fancing a circular field at the rate of ₹24 per metre is ₹5280. The field is to be ploughed at the rate of ₹0.50 per m². Find cost of ploughing?

Posted by Riyaz Khan 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Khushi 5 years ago

Sol:- Length of fence=total cost/rate =5280/24=220m So, circumference of the field=220m ∴ if r metres is the radius of the field, then 2πr=220 2×22/7×r=220 =r=35 i.e, radius of the field is 35m ∴ the area of the field=πr²=22/7×35×35 m² =22×5×35m² Now, the cost of ploughing 1m² of the field =Rs. 0.50 So, total cost of ploughing the field=Rs. 22×5×35×0.50= Rs.1925

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... .... 5 years ago

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The length of the minute hand of a clock is 14cm. Find the area swept by the minute hand in 5 min

Posted by Meghana Kondeti 5 years ago

CBSE > Class 10 > Mathematics