Question

Let sinx+siny=a and cosx+cosy=b . If $tan(\frac{x-y}{2} )$=$\frac{\sqrt{alpha-a^{2} -b^{2} } }{a^{2}+b^{2} }$ than alpha is?

Answer 1

Answer:

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Answer 2

Answer:

The value of

Step-by-step explanation:

Given :

To find : The value of

Solution :

We know,

.....(1)

We know,

....(2)

Divide (1) and (2),

Therefore, The value of