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sinx +cosx=k find value of sin2x

sinx +cosx=k
find value of sin2x

Grade:7

1 Answers

Shubham Chakraverty
20 Points
7 years ago
(sin x + cos x)^2=k^2 , 1 + sin 2x = k^2 , sin 2x = k^2 -1

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