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Solve `cos2x >|sinx|,x in (pi/2,pi)`

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
  1. For each natural number k, let Ck denotes the circle with radius k uni...

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  2. Let A,B,C, be three angles such that A=pi/4 and tanB tanC=pdot Find ...

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  3. Solve cos2x >|sinx|,x in (pi/2,pi)

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  4. State if the given angles are coterminal. (i) alpha=185^0,beta=-545^0 ...

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  5. Prove that a triangle A B C is equilateral if and only if tanA+tanB+ta...

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  6. If sinA=sin B and cosA=cosB , then find the value of A in terms of Bdo...

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  7. Express 1.2 rad in integer degree measure.

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  8. In triangle A B C , if cosA+cosB+cosC=7/4, t h e n R/r is equal to 3/4...

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  9. Find the number of solutions of sin^2x-sinx-1=0 xin[-2pi,2pi]

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  10. Find the length of an arc of a circle of radius 5cm subtending a ce...

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  11. In an equilateral triangle, the inradius, circumradius, and one of the...

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  12. Solve : (log)((-x^2-6x)//10)(sin3x+sinx)=(log)((-x^2-6x)//10)(sin2x)

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  13. Find in degrees the angle subtended at the centre of a circle of di...

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  14. The area of a regular polygon of n sides is (where r is inradius, R is...

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  15. Find the value of theta which satisfy rsintheta=3 and r=4(1+sintheta)...

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  16. If arcs of same length in two circles subtend angles of 60^0 and 75^0 ...

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  17. If the sides a , b , c of a triangle A B C form successive terms of G....

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  18. The number of solution of 16^(sin^2 x) + 16^(cos^2 x) = 10 : 0 le x le...

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  19. If secx+sec^2x=1 then the value of tan^8x-tan^4x-2tan^2x+1 will be equ...

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  20. In triangle A B C ,ifPdotQ ,R divides sidesB C ,A C , and A B , respec...

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