Question

In right angle triangle ABC, 8 cm, 15 cm and 17 cm are the lengths of AB, BC and CA
respectively. Then, find out sin A, cos A and tan A.
​

Answer 1

find cos A by formula

cos A= (b^2+ c^2 -a^2)/2bc

b and c is the side opposite to the angle B an C respectively...

rest you can find sinA and tan A by finding out Cos A

thanks...i hope it helps you

Answer 2

Given:- There is a right angled triangle of which AB=8cm,BC=15cm and CA=17cm

We know that hypotenuse is the longest side .So, in this triangle CA is the hypotenuse which shows that this triangle is right angled at B.

To find:- sinA,cosA and tanA

Therefore here is your answer mate that

sinA=BC/CA=15/17

cosA=AB/CA=8/17

tanA=BC/AB=15/8

HOPE THIS WILL HELP YOU