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If in a triangle (1-r1/r2)(1-r1/r3)=2,th...

If in a triangle `(1-r_1/r_2)(1-r_1/r_3)=2,`then the triangle is

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. The set of all x in the interval [0,pi] for which 2sin^2x-3sinx+1geq0 ...

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  3. If in a triangle (1-r1/r2)(1-r1/r3)=2,then the triangle is

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  4. Let alpha and beta be the roots of the quadratic equation x^(2) sin th...

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  5. A parallelogram containing a 60^0 angle has perimeter p and its longer...

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  6. If r/(r1)=(r2)/(r3), then

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  7. If sin(sinx+cosx)=cos(cosx-sinx), and largest possible value of sinx ...

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  8. If 0lt=xlt=pi/3 then range of f(x)=sec(pi/6-x)+sec(pi/6+x) is

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  9. For each natural number ngt=2, prove that sinx1cosx2+sinx2cosx3+...+si...

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  10. The values of x1 between 0 and 2pi , satisfying the equation cos3x+c...

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  11. If y=(sin^4x-cos^4x+sin^2xcos^2x)/(sin^4x+cos^4x+sin^2xcos^2x),x in (0...

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  12. In an acute angled triangle A B C ,r+r1=r2+r3a n d/B >pi/3, then (a) b...

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  13. If un=sin^("n")theta+cos^ntheta, then prove that (u5-u7)/(u3-u5)=(u3)/...

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  14. If x ,y in R and x^2+y^2+x y=1, then find the minimum value of x^3y+x...

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  15. The general solution of the equation sin^(100)x-cos^(100)x=1 is

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  16. If in triangle A B C ,sumsin(A/2)=6/5a n dsumI I1=9 (where I1,I2 a n d...

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  17. Prove that in A B C ,tanA+tanB+tanCgeq3sqrt(3,) where A , B , C are...

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  18. In triangle A B C ,/A=60^0,/B=40^0,a n d/C=80^0dot If P is the center ...

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  19. If cos3x+sin(2x-(7pi)/6)=-2 , then show that x is of the form π / 3(6...

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  20. Prove that sin2A + sin2B + sin2C = 4sinA · sinB · sin C

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