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सिद्ध कीजिए की: (sin A -sin 5A +sin 9...

सिद्ध कीजिए की:
` (sin A -sin 5A +sin 9A -sin 13A)/( cos A -cos 5A -cos 9A +cos 13A )= cot 4A `

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(sin A-sin5A+sin9A-sin13A)/(cos A-cos5A-cos9A+cos13A)=cot4A

(sin A-sin5A+sin9A-sin13A)/(cos A-cos5A-cos9A+cos13A)=cot4A

( sin A + sin 5A + sin 9A)/( cos A + cos 5A + cos 9A)=

(sin A + sin5A + sin9A) / (cos A + cos5A + cos9A) =

( sin A + sin 3A + sin 5A + sin 7A)/(cos A + cos 3 A + cos 5 A + cos 7A) = tan 4A.

( sin 4 A sin 3A - sin 5A sin 2A+ sin 7A sin 4A )/(cos 2A cos 3A - cos 2A * cos 7A + cos A * cos 10A )=

(sin5A-sin7A+sin8A-sin4A)/(cos4+cos7A-cos5A-cos8A)=cot6A

((sin 7x + sin 5x ) +(sin 9x + sin 3x))/( (cos 7x + cos 5x ) + (cos 9x + cos 3x ))= tan 6x

((sin 7x + sin 5x ) +(sin 9x + sin 3x))/( (cos 7x + cos 5x ) + (cos 9x + cos 3x ))= tan 6x

((sin 7x + sin 5x ) +(sin 9x + sin 3x))/( (cos 7x + cos 5x ) + (cos 9x + cos 3x ))= tan 6x