Question

Given 15 tan A = 8, Find cos A and cosec A.​

Answer 1

Answer:

Given : 15 tan A=8

As Tan A = 8/12= perpand/Base

Now

(Hypotaneous)²= (Base)² + (Perpendicular)

H² = (15)² + (8)²

H² = 289

H=17

As we know

Sin A = perpendicular/Hypotaneous

Sin A = 8/17

and

1/ Sin A = Cosec A

Cosec A = 17/8

Now

Cos A = Base /Hypotaneous

Cos A = 15 / 17

Cos A = 15 / 17