trigonometry

Question: If $\sin A=\frac{1}{\sqrt{10}}$and $\sin B=\frac{1}{\sqrt{5}},$where A and B are positive acute angles, then $A+B=$

1) $\pi $

2) $\pi /2$

3) $\pi /3$

4) $\pi /4$

Solution:

Explanation: No Solution

Trigonometric ratios of sum and difference of two and three

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