Q13 of 76 Page 52

If then show that

[Hint: Use componendo and Dividendo]

To prove:


Given,



∵ sin(A+B) = sin A cos B + cos A sin B


∴


⇒


Applying componendo-dividendo rule, we get –


⇒


⇒


⇒


⇒ {∵ tan A = (sinA)/(cosA)}


⇒


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