Question

If sinA = cosB and sinA= tanA then the value of B degree is

Answer 1

SinA = tanA means sinA = sinA /cosA

1 = 1/cosA (by cancelling sinA on both sides)

CosA = 1= cos 90°

Angle A = 90°

SinA = cos B (given)

Sin90° = cos B

1 = cosB

Cos 0° = cos B

Angle B = 0°

Answer 2

Answer:

B=90 degrees

Step-by-step explanation:

sinA=cosB

sinA=tanA

sinA=sinA/cosA

Both sides sin a is present we can cancel the sinA terms on both sides

there by we can write cosA=1

cos0=1

means the angle of a is 0 degree

sin0=cosB

sin0=0

0=cosB

B=90 degrees

This is the actual answer