(sinø-cosø)^2=1-sin2ø

Asked by abhaysharma2710 | 15th 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

Answered by Sneha shidid | 16th Jul, 2018, 11:47: AM