Answer:
53.1°
Explanation:
USING TOA
For tan
and for cot
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]