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If A lies between 180^@ and 270^@ and 12...

If A lies between `180^@` and `270^@` and 12 tan A =5 , find the value of 5 cot A-13 sin A +12 sec A .

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MCGROW HILL PUBLICATION-TRIGONOMETRY-Multiple Choice Questions
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  5. The value of cos 1^@ cos 2^@ cos 3^@…..cos 179^@ is

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  6. tan 1^@ tan2^@...tan 89^@=

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  7. Which of the following is correct ? [Hint: 1 radian = 180°/π = 57°30’ ...

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  8. If tantheta =-4/3, then sin theta is

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  9. If 0^@ le x le 90^@ and 1+tan^2 x - 2 tan x =0, then the value of x is

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  10. If x is acute , then sqrt((1+sinx)/(1-sinx)) is

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  11. The value of sin^3 alpha ( 1+cot alpha) + cos^3 alpha (1+tan alpha) i...

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  12. If x=r cos alpha cos beta,y=r cos alpha sin beta,z=r sin alpha then x^...

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  13. If cosalpha+cosbeta = 0=sinalpha+sinbeta, then cos2alpha+cos2beta is e...

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  14. tan""(2pi)/(5)-tan""(pi)/(15)-sqrt3tan""(2pi)/(5)tan""(pi)/(15) is equ...

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  15. If A +B+C= pi and m/C is obtuse then tan A. tan B is

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  16. If tan A=1/2 and tan B=1/3 , then the value of A+B is

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  17. The value of (sin^3 theta + cos^3 theta)/(sin theta+ costheta)+((cos^3...

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  18. The extremum values of cos x are :

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  19. The value of sin^2 alpha cos^2 beta + cos^2 alpha sin^2 beta + sin^2 a...

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  20. If A= cos^(4)theta+sin^(2)theta , then for all values of theta :

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  21. If tan theta=a/b, then the value of b cos 2theta+asin 2 theta is

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