Find sin2x,cos2x,tan2x when tanx=24/7 and x lies in third quadrant
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Sin2x=2tanx/1+tan^2x =(24/7)/1+24/7*24/7
= 24/7/625/49 =24*7/625=-168/625
Cos2x = -527/625
Tan2x= 168/527
= 24/7/625/49 =24*7/625=-168/625
Cos2x = -527/625
Tan2x= 168/527
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