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In an acute triangle ABC ,if tan(A+B-C)=1and sec(B+C-A)=2,then find A,B,C

Posted by Devapriya Bajilal 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhay Pandey 6 years, 10 months ago

C 67.5 A45 B 57.5

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Proportional theorem proof

Posted by As Ss 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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O is the centre of circle of radius 5 .centimetre is a point. Such that OT 13cm and intersect the circle at E if AB is the tangent of circle at E then the find of length of AB

Posted by Vaibhav Gupta 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

Given: O is the centre of a circle of radius 5 cm T is a point such that OT = 13 cm and OT intersects circle at E. If AB is a tangent to the circle at E.

Solution:

Thus, AB=6.6cm

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Sin A( 1+tan A)+cos A( 1+cos A)=sec A

Posted by Amresh Shukla 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Rahul Kumar 6 years, 10 months ago

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If 1+Sin²A = 3SinACosA Prove that tanA=1 or 1/2

Posted by Kunal Sant 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the zeroes of the polynomial ax2+bx+b=0are in the ratio m:n,then find the value of root m/n+root n/m

Posted by Keerthi . 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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Prove that the tangents drawn at the end points of a chord of a circle make equal angles with the chord

Posted by Kashish Maheshwari 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Amresh Shukla 6 years, 10 months ago

In ncert book it is given in example

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Find the common difference if a27th - a7th =84

Posted by Mahi ✌?? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Anshu Rai ? 6 years, 10 months ago

D= 4.2

0Thank You

Keerthi . 6 years, 10 months ago

It is 26d+6d...

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Titiksha Shukla 6 years, 10 months ago

a+26d - a+6d=84 26d-6d=84 20d=84 d=4.2

2Thank You

Keerthi . 5 years, 8 months ago

A27-a7=84 A+26d-a+6d=84 32d=84 D=84/32 D=21/8

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Show that positive odd integer 6q+1 or 6q+3 or 6q+5 where q is some integer

Posted by Shruti Hada 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the mean of 25observation is 27and each is decrease by 7what will be the new mean

Posted by Razz Abhi 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Anshu Rai ? 6 years, 10 months ago

New mean =20

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Sin tetha (1+tan tetha ) + cos tetha (1+ cos tetha ) = sec tetha

Posted by Rohan Sarkar ⚽⚽ 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

6q+1 6q+3 6q+5 show that any postive integer

Posted by Piyush Tiwari 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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A train covers a distance of 90 km at a uniform speed had the speed been 15 km /h more ,it would have 30 minutes les for journey find the orginal speed of train

Posted by Priyanka Baghel 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Anchal Kaurav 6 years, 10 months ago

45km/h

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Hindimedium mai kese kare

Posted by Bhanu Pratap Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Geetanand Yadav 6 years, 10 months ago

Bhai isme math hindi medium me nhi hai

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Find the volume of largest right circular cone that is cut off from cube whose edge is 9cm.

Posted by Gurleen Kaur 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Anshu Rai ? 6 years, 10 months ago

The height of largest cone will be 9 cm and its radius will be 9/2. Therefore volume =π*1/3*9/2*9/2*9 =33*9/14*9 (π= 22/7) = 297*9/14 =2673/14=190.928 cm³

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Find ratio in which y axis divides line segment joining A(5,-6) and B(-1,-4) also find point of intersection

Posted by Jagdish Arora 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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waters flow out through a circular pipe whose internal radius is 1cm at the rate of 80 cm per second into an Empty cylindrical tank the radius of whose base is 40 cm by how much will the level of water rise in the tank in half an hour

Posted by Deepanshu Sati 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The sum of the squares of two consecutive odd number is 394 find the number

Posted by Clashing Shanu 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Harshdeep Singh 6 years, 10 months ago

It will form an equation 2x^2+2x-393=0

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Three vertices of parallelogram taken in order are (1,2) (2,4) and (3,7). Find its fourth vertex

Posted by Tejash Shah 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Geetanand Yadav 6 years, 10 months ago

Join it's diagonals and then by mid point formula

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Sagar Rastogi 6 years, 10 months ago

Find its fourth vertex by distance formula I think..... What about u??

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How can i get a position to top vidharbha or maharashtra

Posted by Yash Nagpure 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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How can i study better and effective in these last 10 days especially in maths, science, sst and english

Posted by Yash Nagpure 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Anurag Kadao 6 years, 10 months ago

Set realistic goals ,but not for the long term but the short term ... Like right now you have to study for scoring good marks in exams ,so study is most important to you right now .This should always in our mind so you will able to concentrate. And very good luck to you☺☺

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Is it possible to design a rectangular park of perimeter 80m and area400msqaure ? If so,find it's length and breadth.?

Posted by Farhan Ali 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Harshdeep Singh 6 years, 10 months ago

It'll have equal roots. hence D=0

1Thank You

Harshdeep Singh 6 years, 10 months ago

From the formula of it's area and perimeter we can obtain 2 equations which can be substituted to calculate the answers.

1Thank You

Harshdeep Singh 6 years, 10 months ago

It's length and breadth will be 20m.

1Thank You

Geetanand Yadav 6 years, 10 months ago

Yes length=20m. And breadth=20m.sol.l*b=400 then l=400/b then put this value in perimeter of rectangle you will get the answer hope it helps you.......

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Two poles of heights 10m and 15m stand on a plane ground. If the distance between their feet is 5√3m, find the distance between their tops.

Posted by Anvitha Prem 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Rajneesh Kaurav 6 years, 10 months ago

,10m

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Formula to find area of tarpezium

Posted by Preethi? L 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Affu 😊 6 years, 10 months ago

1/2(sum of two parallel line) x hight

0Thank You

Rose Desouza 6 years, 10 months ago

A = a+b/2 × h

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Harshdeep Singh 6 years, 10 months ago

1/2 ×(base1 + base2)×height

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In triangle ABC, right- angled at ,AB=24cm, BC=7cm. Determine (i) sinA, cosA (ii) sinC, cosC

Posted by Himanshu Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Preethi Anu☺?? 5 years, 8 months ago

Hi himanshu singh this is rajalakshmi arumugam how are you

1Thank You

Geetanand Yadav 6 years, 10 months ago

Right angled at ????

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State whether 7×11×13+7is composite number or a prime number

Posted by Ashika Kashyap 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Geetanand Yadav 6 years, 10 months ago

You are Abhinandan say yes or no.. it is a composite number because when you simplify it you will get 1008 it has factor=2*2*2*2*3*3*7.so two comes two times as factor so it is a composite number

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The wheels of a car are of diameter 80 cm. How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour

Posted by Ranjeet Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

hcf of 26 and 91 in form 26m+91n . find value of m and n

Posted by Kunal Garg 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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Sin^2theta + cos^2theta=1 prove

Posted by Last Bencher 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Geetanand Yadav 6 years, 10 months ago

Ha kabih kabih aate hai board me

1Thank You

Last Bencher 6 years, 10 months ago

Is there a question like that

0Thank You

Geetanand Yadav 6 years, 10 months ago

Take (base)ka whole square+(perpendicular)ka whole square=(hypotenuse)ka whole square. Then divide whole equation by(hypotenuse)ka whole square you will get the answer.hope it helps you.......

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How to prepare?

Posted by Amina Najeeb 6 years, 10 months ago

CBSE > Class 10 > Mathematics