Recommended Questions
- (cosalpha-cosbeta)^2+(sinalpha-sinbeta)^2=4sin^2(alpha-B)/2
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- If sinalpha+sinbeta=a and cosalpha+cosbeta=b , prove that tan((alpha...
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- If sinalpha+sinbeta=a and cosalpha+cosbeta=b , prove that tan((alpha-b...
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- Prove that: (cosalpha+cosbeta)^2+(sinalpha+sinbeta)^2=4cos^2((alpha-be...
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- Prove that: (cosalpha-cosbeta)^2+(sinalpha-sinbeta)^2=4sin^2((alpha-be...
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