how can we prove that sin38+sin22=sin82

Asked by sahabya | 29th May, 2010, 02:55: PM

Expert Answer:

Dear Student,



Here, the left hand side is


sin 38o + sin 22o




   Also,              sin θ = cos (90o – θ)


 So,             sin 82o = cos (90o – 82o)


                            = cos 8o                     ……………(ii)


Hence, from (i) and (ii), it is proved that


sin 38o + sin 22o = sin 82o






Topper Learning

Answered by  | 29th May, 2010, 06:08: PM

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