plz tell

Asked by  | 20th Feb, 2010, 11:13: AM

Expert Answer:

3tanθ = 3sinθ

3sinθ/cosθ = 3sinθ

cosθ = 3/3

cos2θ = 3/9

sin2θ = 1 - cos2θ = 1 - 3/9 = 6/9

sin2θ - cos2θ = 6/9 - 3/9 = 3/9 = 1/3

Regards,

Team,

TopperLearning.

Answered by  | 20th Feb, 2010, 11:45: AM

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