sinx +cosx=k
find value of sin2x
Sher Mohammad , 12 Years ago
Grade 7
Algebra> sinx +cosx=kfind value of sin2x...
1 Answers
Shubham Chakraverty
(sin x + cos x)^2=k^2 , 1 + sin 2x = k^2 , sin 2x = k^2 -1
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