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If sintheta1sintheta2-costheta1costheta2...

If `sintheta_1sintheta_2-costheta_1costheta_2+1=0,` then the value of `tan((theta_1)/2)cot((theta_2)/2)` is equal to (a)`-1` (b)` 1` (c) `2 `(d) `-2`

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
  1. (1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=?

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

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

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

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

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

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

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

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

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

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

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

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

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

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  16. If x , y in R satisfies (x+5)^2+(y-12)^2=(14)^2, then the minimum v...

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  17. In triangle A B C , if sinAcosB=1/4 and 3t a n A=t a n B ,t h e ncot^...

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  18. the least positive value of x satisfying ( sin^(2) 2x + 4 sin^(4) x...

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  19. Prove that tan(pi/16)+2tan(pi/8)+4=cot (pi/16) .

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  20. Show that sqrt[2+sqrt[2+2cos4theta]]=2costheta

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