Math, asked by saagarlakhani, 3 months ago

Sin alpha = cos beta

Answers

Answered by soudaminibehera1984

2

Step-by-step explanation:

If sinα+sinβ=aand cosα+cosβ=b, show that cos(α+β)=b2−a2b2+a2. Hint: By applying the formula sum and difference of sines and cosines and then dividing the equations and applying the formula sinα+sinβ=2sin(α+β2)cos(α−β2), cosα+cosβ=2cos(α+β2)cos(α−β2)we will arrive to the final answer

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