If,sin x = √5/3 and 0< x < π/2, find the value of sin 2x , cos 2x , tan 2x
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I think my friend all we need to find is value of cos x and then all the values of sin 2x tan 2x and cos 2x can be easily found. How to do that question I have added in comments
rananikhil188:
To find cos x use formula cos x = 1 - sin^2 x
then find sin 2x by using sin 2x = 2 sinx cosx
and cos 2x by using formula cos2x = cos^2x-sin^2x or 1 -2sin^2x
and tan2x you must be knowing that
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