CBSE Class 10 Answered
trig. please help
Asked by | 05 Aug, 2008, 03:44: PM
Expert Answer
Cos θ + Sin θ = 2 cos θ
2 cosθ -- cosθ ==sinθ
cos θ ( 2 --1) =sinθ
therefore cos θ --- sin θ = cosθ -- cosθ( 2 --1) =cos θ --2 cosθ + cosθ
=2cosθ --2 cosθ
= cosθ (2 -- 2)
Answered by | 05 Aug, 2008, 05:12: PM
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