Prove that: `("cos"8Acos5A-cos12 Acos9A)/("sin"8Acos5A+cos12 As in9A)=tan4A`

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Prove that: ("cos"8Acos5A-cos12 Acos9A)/("sin"8Acos5A+cos12 Asin9A)=tan4A

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

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

Show that (cos8Acos5A-cos12Acos9A)/(sin8Acos5A+cos12Asin9A)=tan4A

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

Show that (cos 8Acos 5A-cos12Acos 9A)/(sin 8Acos 5A+cos 12Asin 9A)=tan 4A

(cos 8 A cos 5A-cos 12 A cos 9A)/(sin 8 A cos 5 A +cos 12Asin 9A)=

Show that (cos 8 A cos 5A - cos 12 A cos 9A )/( sin 8 A cos 5A + cos 12 A sin 9A ) = tan 4A

Prove that: (sin3A cos4A-sin Acos2A)/(sin4A sin A+cos6A cos A)=tan2A

Prove that: (sin3Acos4A-sinAcos2A)/(sin4AsinA+cos6AcosA)=tan2A