Question

2. If A,B are acute angles such that sinA = cosB, then A + B =
b) 45°
C) 90°
a) 60°
looltoo​

Answer 1

Answer:

90°

Step-by-step explanation:

sinA equal to cosB is equal to 45 degree

the value of sin45° is equal to 1 by root 2 and Cos 45° is equal to 1 by root 2

so ,sinA equal to sinB

A+B = 45°+45°

= 90°

Answer 2

sin A = cos B ⟹ sin A = sin (90°-B)

⟹ A = 90°-B

⟹A+B=90°