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Solve sin 2x+cos x=0...

Solve sin 2x+cos x=0

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MAHAVEER PUBLICATION-TRIGONOMETRIC RATIOS-QUESTION BANK
  1. Find the principal solution of the equation tan x=sqrt3

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  2. Find the principal solution of the equation cos x=-1/2

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  3. Solve sin 2x+cos x=0

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  4. sec^(2)2x=1-tan2x

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  5. Solve for theta,2 cos^2 theta+sin theta-1=0,0 le theta le pi/2

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  6. Convert the following radian into degree measure(4pi)/5

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  7. Convert the following radian into degree measure(7pi)/6

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  8. Convert the following radian into degree measure(5pi)/3

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  9. If sin theta = 5/7 what is cos theta and tan theta?

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  10. If cos theta= 3/5 what is tan theta and cos ectheta?

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  11. If tan theta= 5/4 what is sin theta and cos theta?

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  12. If cos theta=-4/5, find the value of cot theta?

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  13. Given tan theta=-3/4 and (3pi)/2 lt theta lt 2pi, find the other trigo...

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  14. If tan (A+B)=p, tan(A-B)=q find tan 2A.

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  15. If tantheta=a/b , show that (asintheta-bcostheta)/(asintheta+bcostheta...

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  16. Evaluate the following: sin 78^@ cos 18^@-cos 78^@ sin 18^@

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  17. Evaluate the following: cos 47^@ cos 13^@-sin 47^@ sin 13^@

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  18. Find the value of the following trigonometric functions: sin 765^@

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  19. Find the value of the following trigonometric functions:cos(-1410^@)

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  20. Find the value of the following trigonometric functions:sin(-(11pi)/3)

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