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CHHAYA PUBLICATION-TRANSFORMATIONS OF SUMS AND PRODUCTS-Very Short Answer type Questions
- Prove that (sin 3theta-sintheta)/(costheta-cos3 theta)=cot2 theta
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- Prove that (sin A-sin B)/(cos A+ cos B) = "tan" (A-B)/2
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- Prove that (sin theta+ sin 2theta + sin 3 theta)/(costheta+cos2theta...
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- Prove that (cos alpha - cos beta)^(2) +(sin alpha - sin beta)^(2) = ...
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- Prove that cos 10^(@) + cos 110^(@) + cos 130^(@) = 0
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- Prove that sin85^(@) - cos65^(@) +cos55^(@)=0
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- Prove that sin18^(@)+cos18^(@)= sqrt2 cos 27^(@)
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- Prove that (sin75^(@)+sin15^(@))/(sin75^(@)-sin15^(@))=sqrt3
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- Prove that (cos45^(@)-cos75^(@))/(sin45^(@)+sin75^(@))=2-sqrt3
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- Prove that (cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan 25^(@)
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- Prove that (cos10^(@)-sin10^(@))/(cos10^(@)+sin10^(@))=tan35^(@)
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- Prove that (cos2 alpha-cos 2 beta)/(sin2 alpha+sin2 beta)=tan(beta-...
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- If x cos alpha + y sin alpha=x cos beta+y sin beta,"show that",y=x "ta...
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- If " "cos alpha+cosbeta=1/3 " and " sinalpha+sin beta=1/4, "show that"...
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