Question

If Cos (x+y)=0.5 find sin(x+y)
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Answer 1

Step-by-step explanation:

$\cos(x + y) = \frac{1}{2} \\ x + y = \cos^{ - 1} ( \frac{1}{2} ) \\ x + y = 60 \\ \sin(x + y) = \sin(60) = \frac{ \sqrt{3} }{2}$