Question

c
Given 5 cos A - 12 sin A = 0, find the value of
sin A + cos A
2 cos A - sin A​

Answer 1

5cos A = 12 SinA

Tan A = 5/12

it means a triangle with sides 5,12&13

so sinA = 5/13

CosA = 12/13

so put the values in the required equation and the answers are as follows

sin A + cos A = 17/13

2cos A - sin A = 19/13