Question

if tan = -4/3, then cos is​

Answer 1

we know that, tan = P/b

tan = -4/3

on comparing, P = -4

b = 3

We know that,

Cos = b/H

by Pythagoras theorem,

(H)²= (P)² + (b)²

H² = (-4)² + (3)²

H² = 25

H. = 5

Cos = b/H

= 3/5