If cos2A+cos3A =1 Then sin 2 A + sin4 A =1 True or false ...give reason
Mrinal , 5 Years ago
Grade 10
Trigonometry> If cos 2 A+cos 3 A =1 Then sin 2 A + sin ...
1 Answers
Arun
Last Activity: 5 Years ago
Dear student
It is incorrect
as
A=12A= Cos A+Cos4A + sin2ASo, Required issin2A = sin2A=1=> cosA = 1 – cos2Cos A+Cos
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