Grade 12th passTrigonometryNeed solution to cosAcos2Acos4A in terms of cos3A? Is it (1/4)cos3A Arsha 8 Years agoGrade 12th pass
Gautam Kumar8 Years agoNo sin8A/8sinA using formula of continuous product of cosine .this is the the answer of cosAcos(60-A)cos60+A)