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Xsin³theta + ycos³theta = sintheta. costhetaxsintheta -ycostheta =0 prove x² + y2 = 1 |
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Answer» ong>Answer: If X SIN3|+ y cos3|=sin|cos| and xsin|=ycos|, PROVE x2+y2=1. Answer: Answer: Here is ur answer dear:- => xsin³theta + ycos³theta= sintheta×costheta. => x.sin³theta + cos²theta.(ycostheta) = sintheta.costheta. • [use xsintheta= ycostheta in above] => xsin³theta+ cos²theta× xsintheta= sintheta×costheta. => xsintheta( sin²theta + cos²theta) = sintheta×costheta. => xsintheta = sintheta×costheta. => x = costheta. => so, y = sintheta. Hope it is correct Step-by-step explanation: |
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