Recommended Questions
- Prove the following: (cosx-cosy)^2+(sinx-siny)^2=4sin^2(frac(x-y)(2))
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- सिद्ध कीजिये : (cosx-cosy)^(2)+(sin x-siny)^(2)=4sin^(2)((x-y)/(2))
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- Prove that (cosx+cosy)^(2)+(sinx-siny)^(2)=4cos^(2)((x+y)/(2))
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- सिद्ध कीजिए कि- (sinx-siny)/(cosx+cosy)="tan"(x-y)/(2).
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- Prove that:(sinx-siny)/(cosx+cosy)=tan(x-y)/2
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- Prove that: (cosx-cosy)^2+(sinx-siny)^2=4sin^2(x-y)/2
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- Prove that: (cosx+cosy)^2+(sinx-siny)^2=4cos^2(x+y)/2
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- Prove that (sinx-siny)/(cosx+cosy)=tan((x-y)/(2))
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- Prove that : (cosx+cosy)^(2)+(sinx-siny)^(2)=4cos^(2)""(x+y)/(2)
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