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If sin A, cosA and tan A are in G.P., th...

If `sin A, cosA and tan A` are in G.P., then `cot^(6)A-cot^(2)A=`

A

`-1`

B

0

C

1

D

none of these

Text Solution

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The correct Answer is:
c
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MCGROW HILL PUBLICATION-TRIGONOMETRICAL IDENTITIES AND EQUATIONS -EXERCISE (LEVEL 1 Single Correct Answer Type Questions)
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  2. cos11^(@)-cos2^(@) is

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  3. If sin A, cosA and tan A are in G.P., then cot^(6)A-cot^(2)A=

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  4. If cosx-sinx=1//2, then tan2x=

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  5. Which of the following gives the least value of A

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  6. If n in N and sin((pi)/(2n))+cos((pi)/(2n))=(sqrt(n))/(2), then a poss...

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  7. If 4n alpha=pi, then the value of tan alpha tan 2alpha tan 3 alpha…… t...

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  8. If x gt0 and |(x, sin theta, cos theta),(-sin theta, x, 1),(cos theta,...

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  9. If 2tan(pi//3) cos (2pi x)=sqrt(3), the general solution of the equati...

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  10. 2cos^(2)x+4cosx=3sin^(2)x if

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  11. 6tan^(2)x-2cos^(2)x=cos2x if

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  12. The greatest value of cos theta for which cos 5 theta=0 is

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  13. If tan p theta= tan q theta, then the values of theta form an A.P. wit...

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  14. The equation int(0)^(x).(t^(2)-8t+13) dt =x sin(a//x) has a solution i...

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  15. The smallest positive root of the equation sqrt(sin(1-x))=sqrt(cosx)...

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  16. The sum of the roots of the equation 4cos^(3)x-4cos^(2)x-cos(pi+x)-1...

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  17. A solution (x, y) of x^(2)+2x sin xy+1=0 is

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  18. e^(sinx)-e^(-sinx)=4 for

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  19. The number of values of x satisfying the condition sin x +sin 5x=sin3x...

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  20. sin x, sin2x, sin3x are in A.P. if

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