Question

यदि sin A = cos B जबकि A तथा B न्यूनकोण हैं तो सिद्ध कीजिए कि A + B = 90°

Answer 1

Answer:

sinA =cos B

We know that,

sinA=cos(90-A)

so, cos(90-A)=cosB

We given that A and B both are acute angles

so,90-A=B

A+B= 90°