Question

If sin A= sin B then prove that A+ B= 90

Answer 1

Answer:

I think the question is wrong.

Once check it again and post.

I am telling this bcz if sinA=sinB, then A=B.

I think the question is sinA=cosB or something.....

Answer 2

Answer:

If sinA=cosB, then prove that A+B=90°.

NCERT questions is sinA=cosB

sinA=cosB

sinA=sin(90−B)

A=90−B

A+B=90°