EXAMPLE 17 Given that sin (A + B) = sin A cos B + cos A sin B, find the value of sin 75°
SOLUTION Putting A = 45° and B = 30° in sin (A + B ) = sin A cos B + cos A sin B,
we get
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just put the value in formula and find the ans your valuer are Wright
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Sin 75°=sin(45°+30°)
Sin45.cos30+cos45.sin30
Now put value of all these. We will get the answer
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