Question

3. Find the value of b.
48°
b
b =

Answer 1

42

Explanation:

`48° + x = 90(angle \: at \: a \: right \: angle)`

`therefore \: x = 90°- 48°\\ = 42°`

Answer 2

B = 42

Explanation:

B + 48 = 90 ... because they are complement angles

B = 90 - 48

B = 42 ...... so the unknown angle is 42