Trigonometry
if sinx+sin2x=1 then cos2x +cos4x=?
if sinx+sin2x=1 then cos2x +cos4x=?
4 Answers
SAGAR SINGH - IIT DELHI
Dear student,
sinx=1-sin2x=cos2x
Use this to solve...
Shubham
sinx=1-sin2x=cos2x
therefore.. sin2x=cos4x
cos2x+cos4x=1
Shubham
sinx=1-sin2x=cos2x
therefore.. sin2x=cos4x
cos2x+cos4x=1
Shubham
sinx=1-sin2x=cos2x
therefore.. sin2x=cos4x
cos2x+cos4x=1
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