Prove that `cos 5A = 16 cos^5A - 20 Cos^3 A + 5 cos A`

Prove that: cos5A=16cos^(5)A-20cos^(3)A+5cos A

Prove that: cos5A=16cos^(5)A-20cos^(3)A+5cosA

Prove that: (cos 2A cos 3A -cos 2A cos 7A + cos A cos 10A)/("sin" 4A sin 3A - sin 2A sin 5A + sin 4A sin 7A) = cot 6A cot 5A

Prove that cos 5x =17 cos^(5) x -2 theta cos^(3) x+ 5 cos x

cos5x=16cos^(5)x-20cos^(3)x+5cos x

Prove that: (cos8A cos5A-cos12A cos9A)/(sin8A cos5A+cos12A sin9A)=tan4A

Prove that 2cosx. Cos 3x- 2cos 5x. Cos 7x- cos 4x + cos12x=0 .

Prove that: quad s in5A cos2A-s in6A cos As in As in2A-cos2A cos3A=tan A

Prove that: cos A+cos3A+cos5A+cos7A=4cos A cos2A cos4A

Prove that: (cos4A+2cos5A+cos7A)/(cos A+2cos3A+cos5A)=(cos5A)/(cos3A)