Question 12

If $$\sin A = \cos B$$, where $$A$$ and $$B$$ are acute, then find $$(A + B)$$.

Given, Sin A = Cos B, it can be written as

Sin A = sin(90 - B)

A = 90 - B

A + B = 90.

C is correct choice.

Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free