Question

If sinA = cosA, then the angle A is equal to​

Answer 1

Answer:

A=45°

Step-by-step explanation:

sinA = cosA

tanA = 1

A = 45°

Answer 2

Answer:

Given, sinA=cosA

cosAsinA=1

⇒tanA=1

⇒A=45∘

Step-by-step explanation:

Given, sinA=21

⇒sinA=sin30(sin30=21)

⇒A=30

Also given cosB=21

⇒cosB=cos45(cos45=21)

⇒B=45

Therefore, A+B=30+45=75