Formulae of Sin(3A), Cos(3A) & tan(3A)

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3A angles ( Sin 3A , Cos 3A , tan 3A & proOF) || Important results || Examples

Prove that: (sinA - 2sin^(3)A)/(2 cos^(3)A - cosA) = tan A

(sin A+sin3A)/(cos A+cos3A)=tan2A

(sin A sin2A + sin3A sin6A) / (sin A cos2A + sin3A cos6A) = tan5A

If sin A=(3)/(5), find cos A and tan A

Prove that: (sin5A-sin3A)/(cos5A+cos3A)=tan A(sin A+sin3A)/(cos A+cos3A)=tan2A

Prove: (sin x + cos x) / (cos ^ (3) x) = tan ^ (3) x + tan ^ (2) x + tan x + 1

Prove the following identity: (sn^(3)A+cos^(3)A)/(s in A+1-tan A)+(sin^(3)-cos^(3)A)/(s in A-cos A)=2

Prove that (sin5A- sin3A)/(cos 5A +cos 3A)= tanA