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If 3tanA+4=0, then the value of 2cotA-5c...

If `3tanA+4=0,` then the value of `2cotA-5cosA+sinA` is equal to

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
  1. If x^2+y^2=x^2y^2 then find the range of (5x+12 y+7x y)/(x y) .

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  2. 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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  3. If 3tanA+4=0, then the value of 2cotA-5cosA+sinA is equal to

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  4. Solve sin2theta+costheta=0

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  5. Two medians drawn from the acute angles of a right angled triangle int...

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  6. For all, x ,y in Rdot find the range of ((x+y)(1-x y))/((1+x^2)(1+y^2...

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  7. A circle centred at 'O' has radius 1 and contains the point A. Segment...

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  8. Solve that equation : costheta+cos3theta-2cos2theta=0

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  9. If x^2+y^2=4 then find the maximum value of (x^3+y^3)/(x+y)

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  10. If inside a big circle exactly n(nlt=3) small circles, each of radius ...

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  11. If b >1,sint >0,cost >0a n d(log)b(sint)=x ,t h e n(log)b(cost) is equ...

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  12. Find the general values of x and y satisfying the equations 5sinx cosy...

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  13. If (x^2)/4+(y^2)/9=1, then find the range of 2x+ydot

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  14. If A is the area and 2s is the sum of the sides of a triangle, then Al...

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  15. Find the general solution of : sqrt(3)sec2theta=2

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  16. Find the value of 2cos^3(pi/7)-cos^2(pi/7)-cos(pi/7)

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  17. In acute angled triangle A B C ,A D is the altitude. Circle drawn with...

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  18. Show that sin^2 5^0+sin^2 10^0+sin^2 15^0+....+sin^2 90^0=9 1/2dot

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  19. Solve (sin^3x/2-cos^3x/2)/(2+sinx)=(cosx)/3

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  20. Prove that 4cos(2pi)/7dotcospi/7-1=2cos(2pi)/7dot

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