Question

I need help finding the cos?

Answer 1

53.1°

Explanation:

USING TOA

`t * (o)/(a)`

For tan

and for cot

`t * (a)/(o)`

o (opposite) = side opposite angle A

a (adjacent) = side between angle A and B [90° segment]

o = 40

a = 30

Solve for A..

• tan^1(40/30)
• Enter value into your calculator

== ~ 53.1° [we usually round to 1dp or one decimal place]

Answer 2

Maybe that one can help