Question

If sinβ - cos β= 0, then 0 = ?
a) 90°
b) 45°
c) 180°
d) 30°​

Answer 1

Step-by-step explanation:

sinB = cosB

Cos(90-B) = cos B

90-B = B

2B = 90°

B = 45° .......

sin45° = cos45° = 1/√2