Question

If A+B = 90° ,cos B = 3/4, then find tan A

Answer 1

Answer:

tanA=3/root 7

Explanation:

A+B =90

B=90-A

cosB=3/4

cos(90-A)=3/4

SinA=3/4

By phythagorus theorem

base = (4)^2 - (3)^2

base =

$\sqrt{7}$

tanA = 3/root7