Question

If A and B are acute angles and sin A = cos B, then find the value of A + B.
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Answer 1

Answer:

Step-by-step explanation:

It is given that sin A = cos B

Change cos B as sin (90-B)

We will write it as

SinA= sin (90-B)

Sin and sin cancel ot we get

A= 90-B

Take B to the other side

A+B=90

So simple just remember the formulas of conversion of trigonometric ratios

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