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If `(acosthetasecphi-x)/(asin(theta+phi))=(y-bsinthetasecphi)/(bcos(theta+phi))=tanphi` show that `x^2/a^2+y^2/b^2=1`

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UNITED BOOK HOUSE-HARE SCHOOL-EXERCISE
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  4. Solve :barz=iz^2(z being a complex number)

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  7. Prove that 0le3costheta+4sintheta+5le10

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  8. Show that 4(cos^3 10^@+sin^3 20^@)=3(cos10^@+sin20^@)

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  14. If (acosthetasecphi-x)/(asin(theta+phi))=(y-bsinthetasecphi)/(bcos(th...

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