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If x/(costheta)=y/(cos(theta-(2pi)/3))=...

If `x/(costheta)=y/(cos(theta-(2pi)/3))=z/(cos(theta+(2pi)/3))` then x+y+z is (a)1 (b) 0 (c) `-1` (d) none of these

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
  1. If sin(x+20^0)=2sinxcos40^0,where in (0,pi/2), then which of the foll...

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  2. cosθ/ (1-tanθ) + sinθ/ (1−cotθ) is equals to ​

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  3. If x/(costheta)=y/(cos(theta-(2pi)/3))=z/(cos(theta+(2pi)/3)) then x...

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  4. Prove that : (cosecθ−cotθ)^2 = (1+cosθ)/(1−cosθ) ​

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  5. Let (sin(theta-alpha))/("sin"(theta-beta))=a/b a n d(cos(theta-alpha)...

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  6. (1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=?

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  7. The value of expression (2(sin1^0+sin2^0+sin3^0+...+sin89^0))/(2(cos1...

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  8. If sintheta1sintheta2-costheta1costheta2+1=0, then the value of tan((...

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  9. on a cartesian plane, draw a line segment XY parallel to x-axis at a d...

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  10. In triangle A B C , prove that sin(A/2)+sin(B/2)+sin(C/2)lt=3/2dot H...

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  11. If x1 and x2 are two distinct roots of the equation acosx+bsinx=c , ...

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  12. (sqrt2-sinalpha-cosalpha)/(sinalpha-cosalpha) is equal to (a)sec(alp...

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  13. If (tan(alpha+beta-gamma))/("tan"(alpha-beta+gamma))=(tangamma)/(tanbe...

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  14. If sin(y+z-x),sin(z+x-y),"sin"(x+y-z) are in A.P., then t a n x ,tany...

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  15. Suppose A and B are two angles such that A , B in (0,pi) and satisfy s...

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  16. If "cot"(alpha+beta)=0, then "sin"(alpha+2beta) can be (a)-sinalpha...

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  17. The absolute value of the expression tan(pi/(16))+tan((5pi)/(16))+tan(...

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  18. Prove that: (sin2theta)/(1+cos2theta)=tantheta

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  19. If A and B are acute positive angles satisfying the equations 3 sin^(2...

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  20. The roots of the equation 4x^2-2sqrt(5)x+1=0,a r e (a)sin36^0,sin18...

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