ICSE Class 9 Answered
If Tan theta is root2 -1, then prove that sin theta.cos theta = 1/2 root 2
Asked by prashanth.rajappa | 16 Dec, 2018, 11:16: PM
Expert Answer
As shown in figure, if tanθ = √2-1, then sinθ = (√2-1) / BC and cosθ = 1/BC
Hence sinθ × cosθ =
Answered by Thiyagarajan K | 17 Dec, 2018, 10:26: AM
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