Grade 12th passTrigonometry
2 cos thetha-sin thetha= 1/√2Find the value of 2sin thetha+ cos thetha
2 cos thetha-sin thetha= 1/√2
Find the value of 2sin thetha+ cos thetha
2 Answers
Saurabh Koranglekar
Aditya Gupta
the above ans is wrong. correct method:
2C – S= 1/sqrt2
let 2S+C= k, where C= cosx and S= sinx
squaring and adding
4C^2+S^2 – 4CS + 4S^2+C^2+4SC= ½ + k^2
5(S^2+C^2) – ½ = k^2
k^2= 9/2
or k= ± 3/sqrt2
KINDLY APPROVE :))
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