sinA+sinB divided by cosA+cosB=
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sin A + sin B / cos A + cos B
= 2 sin (A+B/2) cos (A-B/2) / 2 cos (A+B/2) cos (A-B/2)
= tan ( A+B/2)
Hope this helps you !
= 2 sin (A+B/2) cos (A-B/2) / 2 cos (A+B/2) cos (A-B/2)
= tan ( A+B/2)
Hope this helps you !
Answered by
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SinA+sinB = cosA+cosB
HENCE PROVED
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