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CBSE Class 11-science Answered

(sinø-cosø)^2=1-sin2ø

Asked by abhaysharma2710 | 15 Jul, 2018, 10:09: AM
Expert Answer
(sinΦ - cosΦ)2 = sin2 Φ + cos2 Φ - 2sinΦ cosΦ
                      = 1 - sin2Φ                                     using sin2 x + cos2 x = 1 and sin 2x = 2sinx cosx
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