Question

Q25. If sin A = 1/2 and cos
B = 1/2, then A + B = ?

(a) 0°
(b) 30°
(c) 60°
(d) 90°​

Answer 1

Answer:

sin α = 1/2 and cos β = 1/2

sin α = 1/2 = sin 30° and cos β = 1/2 = cos

60° Comparing each sine and cosine angles respectively,

we get α = 30° and β = 60° Thus, α +β = 30°+ 60° = 90°

Hope it will help you ♥️

Answer 2

Answer:

(d) 90⁰

Step-by-step explanation:

sin A= 1/2

According to trigonometry table

sin30⁰=1/2

A= 30⁰

cosB= 1/2

cos60⁰=1/2

B= 60⁰

Therefore,

A+B=30⁰+60⁰

A+B=90⁰