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यदि `cos^(-1)""(x)/(a)+cos^(-1)""(y)/(b)=theta"` तो` "(x^(2))/(a^2)+(y^(2))/(b^(2))` बराबर है-A. `(xy)/(ab)costheta+cos^(2)theta`B. `(2xy)/(ab)costheta+cos^(2)theta`C. `(2xy)/(ab)costheta+sin^(2)theta`D. `(xy)/(ab)costheta+sin^(2)theta` |
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Answer» Correct Answer - C |
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