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RD SHARMA ENGLISH-TRANSFORMATION FORMULAE-All Questions
- Prove that: (cosalpha-cosbeta)^2+(sinalpha-sinbeta)^2=4sin^2((alpha-be...
02:54
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- Prove that: cosalpha+cosbeta+cosgamma+cos(alpha+beta+gamma)=4cos((alph...
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- Prove that: (cos4x+cos3x+cos2x)/(sin4x+sin3x+sin2x)=cot3x
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- Prove that: (cos2A\ cos3A-cos2Acos7A+cos10 A cos A)/(sin4A\ sin3A-sin2...
05:20
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- If three angles A, B, and C are in A.P. prove that: cot B=(sin A-sin C...
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- Prove that: (cos6theta+6cos4theta+15 cos2theta+10)/(cos5theta+5cos3the...
03:53
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- Express each of the following as the product of sines and cosines: sin...
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- Express each of the following as the product of sines or cosines: cos ...
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- Express each of the following as the product of sines and cosines: sin...
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- Express each of the following as the product of sines and cosines: sin...
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- Express each of the following as the product of sines and cosines: cos...
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- Prove that: sin38^0+sin 22^0=sin 82^0
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- Prove that: \ sin 50^0+sin 10^0=cos 20^0
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- Prove that: sin 105^@+cos 105^@=cos 45^@
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- Prove that: cos 100^0+cos 20^0=cos 40^0
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- Prove that: sin 23^0+sin 37^0=cos7^0
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- Prove that: sin 40^0+sin 20^0=cos 10^0
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- Prove that: cos 55^0+cos 65^0+cos 175^0=0
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- Prove that: cos 80^0+cos 40^0-cos 20^0=0
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- Prove that: sin 80^0-cos 70^0=cos 50^0
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