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If sin^2theta=cos^3theta prove that, cot...

If `sin^2theta=cos^3theta` prove that, `cot^6theta-cot^2theta=1` .

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CHHAYA PUBLICATION-TRIGONOMETRIC RATIOS [OR FUNCTIONS] OF POSITIVE ACUTE ANGLES-EXERCISE 2
  1. If sin^4theta+sin^2 theta=1 show that, tan^4theta-tan^2theta=1 .

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  2. If tan^4theta+tan^2theta=1 , prove that, cos^4 theta+cos^2theta=1

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  3. If sin^2theta=cos^3theta prove that, cot^6theta-cot^2theta=1 .

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  4. If sin theta+sin^2theta=1 , show that cos^4theta+cos^2theta=1.

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  5. If cos theta -sin theta =sqrt(2) sin theta , show that, costheta+sinth...

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  6. If un=sin ^n alpha+cos^nalpha then show that, the value of 6u4-4u6 is...

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  7. Find the principal value of cos^-1(-1/2)

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  8. Eliminate theta in each of the following : x=asec theta, y=btan the...

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  9. Eliminate theta in each of the following : a sin theta=p, btan the...

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  10. Eliminate theta in each of the following : sin theta+cos theta=m, t...

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  11. Eliminate theta in each of the following : sintheta -cos theta=a, ...

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  12. If 7sin ^2theta +3cos^2theta =4, prove that, tan theta =pm1/sqrt(3) .

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  13. Find the minimum value of cos^4 theta+sin^2 theta.

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  14. If p tan theta=tan p theta , show that, (sin^2p theta)/(sin^2theta)=(p...

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  15. If (1+sin alpha)(1+sinbeta)(1+singamma)=(1-sinalpha)(1-sinbeta)(1-sing...

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  16. If (cosecalpha-1)(cosecbeta-1)(cosecgamma-1)=(cosecalpha+1)(cosecbeta+...

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  17. Eliminate theta each of the following : l1cos theta+m1sin theta+n1=0...

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  18. Eliminate theta each of the following : asec theta +btan theta+c=0,...

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  19. Eliminate theta each of the following : cos^3 theta +3costhetasin^2...

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  20. If tan theta+sin theta=m and tan theta-sin theta=n, prove that, mn=tan...

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