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ANSWER

If tanA + secA =l prove that secA= l^2+1/2l

Posted by Ritish Singh 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Ram Kushwah 6 years, 4 months ago

tanA + secA =l

or secA+tanA= I ---------------------(1)

We know that

{tex}\sec^2\mathrm A-\tan^2\mathrm A=\mathrm 1-------(2){/tex}

Dividing (2) by (1) we get

{tex}\begin{array}{l}\frac{\sec^2\mathrm A-\tan^2\mathrm A}{\mathrm{secA}+\mathrm{tanA}}=\frac1{\mathrm I}\\\mathrm{secA}-\mathrm{tanA}=\frac1{\mathrm I}-----------(3)\end{array}{/tex}

Adding (1) and (3) we get

{tex}\begin{array}{l}2\mathrm{secA}=\mathrm I+\frac1{\mathrm I}\\2\mathrm{secA}=\frac{\mathrm I^2+1}{\mathrm I}\\\mathrm{secA}=\frac{\mathrm I^2+1}{2\mathrm I}\\\mathrm{Hence}\;\mathrm{proved}\end{array}{/tex}

ANSWER

prove that tan cube theta -1 / tan theta - 1 = secant square theta + tan theta

Posted by Sonu Goyal 6 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The pair of equation 3 X + 4 y is equal to k and man X + 12 y is equal to 6 has infinitely many solution if y

Posted by Nitesh Rawat 6 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Janu Likki 6 years, 4 months ago

Therefore it has infinitely many solutions

Janu Likki 6 years, 4 months ago

3x+4y=k........1 X+12y=6........2 Eq1 ×3 and eq2 ×1 9x+12y=3k X +12y=6 _____________ 8x+0 = -3k _____________ X=-3k/8 From 1 3(-3k/8)+4y=k -9k/8+32y =8k 32y =8k+9k/8

ANSWER

Ex_6.5 1,2,3,4,5,6,7,8,9,10 sum

Posted by Taniya Saini 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

You can check NCERT Solutions here : https://mycbseguide.com/ncert-solutions.html

ANSWER

Chapter -6 integers class6

Posted by Veena Garg 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

Check NCERT Solutions here : https://mycbseguide.com/ncert-solutions.html

ANSWER

Why in trignometry the angle should only be in 90 degree?

Posted by Jeevi Jeevi 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Surjit Singh Kondal 6 years, 4 months ago

Ratios can be found on principle of pythagoras theorem

ANSWER

Is the important questions which are available in this app are really Important?

Posted by Inayath Pathan 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

????Sunny Singh?????? 6 years, 4 months ago

Yes

ANSWER

Find the number of terms in each of the following finite ap I 3,8,13,..............,78

Posted by Ananya Kumari 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Harsh Singh 6 years, 4 months ago

A=1 D=3-1=2 AN=78 AN= A+(N-1)D 78=1+2N-2 79=2N N=39.5TH TERM (APPROX) OR 40TH TERM

ANSWER

The sum of the digits of a two digit number is 9. If 27 is added to it, rhe digits of the number gets reversed. The number is

Posted by Om Kumavat 6 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Akash Lal 6 years, 4 months ago

Prachi Janwani 6 years, 4 months ago

Let ten's digit be x And one's digit be y Number =10x+y x+y=9________equation 1 10x+y+27= 10y+x 10x-x+y-10y= -27 9x-9y= -27 x-y= -3_________equation 2 Subtract equation 2 fron equation 1 x+y-(x-y)=9-(-3) x-x+y+y=9+3 0+2y=12 y=12/2 y=6 puttin the value of y in equation 1 x+6=9 x=9-6 x=3 Number =10x+y 10(3)+6 30+6=36 Therefore, number = 36

ANSWER

Prove (Sin(x)/(cosec(x)-1)) + (cos(x)/(1+sec(x)) = (sin(x)cos(x))/(sin(x)-cos(x)) Hint: convert cosec(x) and ***(x) in form of sin(x) amd cos(x) and prove L.H.S of the equality

Posted by Ayush Pandey 6 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

side book questions

Posted by Uves Alam Alam 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

????Sunny Singh?????? 6 years, 4 months ago

Very important question u have to study

ANSWER

Find the zeroes of the polynomial 6x2-7x-3

Posted by Madhu Shree Madhu 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Anonymous ... 6 years, 4 months ago

=6x²-7x-3 =6x²+2x-9x-3 =2x(3x+1)-3(3x+1) =(2x-3)(3x+1) ⇒2x-3=0 ⇒3x+1=0 ⇒x=3/2 ⇒x= - 1/3 α=3/2 ,β= - 1/3

3Thank You

ANSWER

Explain chapter =1exercise =1.1 in Hindi

Posted by Anwar Khan 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

Check NCERT Solutions here : https://mycbseguide.com/ncert-solutions.html

ANSWER

Prove the thales theorem .

Posted by Moulik Jain 6 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Divide 31 into two parts such that the sum of their squares is 485

Posted by R. Chinmayee 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Aman Agarwal 6 years, 4 months ago

That two parts are. 17 and 14

ANSWER

Sir please tell me other extra books for practice questions

Posted by Roshni Gupta 6 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Himani Saini 6 years, 4 months ago

You can also take help of exam idea

Himani Saini 6 years, 4 months ago

R. D sharma. Best book ever for exams preparation

ANSWER

If alpha and beta are zeroes of the polynomial px^2+qx+r,p is not equal to 0 and zeroes are reciprocal to each other Find the relation between p and r

Posted by Kavana Tn 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Janu Likki 6 years, 4 months ago

Sum of zeroes = alpha +beta === -b/a = q/p Product of zeroes = alpha × beta= c/a==r/p

ANSWER

The latgest number whivh divides 615 and 963 leaving reminder 6 in each case

Posted by Harshita Rajani 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Mayank Sharma 6 years, 4 months ago

615-6=609. 963-6= 957. 615=3×7×29. 963= 3×11×29. HCF= 3×29=87.

ANSWER

I have questions regarding how to make such word problems equations in chapter 3

Posted by Mansi Sengar 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Swati . 6 years, 4 months ago

Let the no of item of any substance be x And other y Then put the value in equation

ANSWER

If α & β are zeroes of ax^2+bx+c then find polynomial whose zeroes are 1/α and 1/β

Posted by Bhumika Singhvee 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Aditya Kumar 6 years, 4 months ago

a/c

ANSWER

If a=pq×q and b=pppq then find the lcm of a and b

Posted by Hansika Bisht 6 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Manav Singh 6 years, 4 months ago

The LCM is p^3q^2

... .. 6 years, 4 months ago

P^3q^2

3Thank You

ANSWER

What is the Syllabus of Math for Mid Term Examination .

Posted by Bajrang Tiwary 6 years, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

????Sunny Singh?????? 6 years, 4 months ago

Ch 1 to 8

Himani Saini 6 years, 4 months ago

Chapter 1,2,3,4,5,6,7 and 14,15 in murlidhar D. A. V

Soumya Ranjan Patra 6 years, 4 months ago

Ch123681116

ANSWER

13.1 8th question

Posted by Ankush Sharma 6 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

I have doubts in forming the equation in quadratic equation can anyone explain

Posted by Bhaskar .T 6 years, 4 months ago

CBSE > Class 10 > Mathematics

5 answers

Mohd Ahmad 6 years, 4 months ago

What is doubt

Johar Singh Parjapati 6 years, 4 months ago

First read given statement carefully and then make your equation in the form of (axsquare+bx+c)

Nikunj Agrawal 6 years, 4 months ago

The standard form is ax square+bx+c

Adnan Mehdi 6 years, 4 months ago

first check what is in a question choose a question and now

Adnan Mehdi 6 years, 4 months ago

yes

ANSWER

A circle can hv _______ parallel tangents at most

Posted by Sahi Sahi 6 years, 4 months ago

CBSE > Class 10 > Mathematics

7 answers

Sahi Sahi 6 years, 3 months ago

Niharika sharma.......

?Niharika Sharma ? 6 years, 4 months ago

No ur answer is wrong bro? i m right that is a circle can have two parallel tangents at most.

Pk . 6 years, 4 months ago

Bro sahi, thanks to you also to confuse me for a moment

Pk . 6 years, 4 months ago

Sis a circle have infinite point, so infinite parallel line occur as a tangent of a circle

❤ 753 6 years, 4 months ago

Depending on the point given

Abhay Kumar 6 years, 4 months ago

Infinite

?Niharika Sharma ? 6 years, 4 months ago

two

ANSWER

For what value of k the root of the equation x2+4x+k=0 are real

Posted by Aman Upadhyay 6 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Mayank Sharma 6 years, 4 months ago

b²-4ac=0. 4²-4×1×k=0. 16-4k=0. 16=4k. 16÷4=k . 4=k.

Suniksha Bhatia 6 years, 4 months ago

Value of k must be less or equal to 4

ANSWER

'A' starts from P to Q a distance of 51.75km at the rate of 6.75km/h. One hour later 'B' starts from Q to P at a rate of 4.25km/h. After a how much time they will meet each other? Explain with a process.

Posted by Rashmi Ranjan Behera 6 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Pk . 6 years, 4 months ago

After 2.77 hr

Pk . 6 years, 4 months ago

After 2.77 hr they will meet together