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If sinx+sinygeqcosacosxAA in R , then s...

If `sinx+sinygeqcosacosxAA in R ,` then `siny+cosa` is equal to ___

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To solve the problem, we start with the given inequality: 1. **Given**: \[ \sin x + \sin y \geq \cos A \cos x \] 2. **Rearranging the inequality**: ...
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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. If 2cosx+sinx=1, then find the value of 7cosx+6sinxdot

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  3. If sinx+sinygeqcosacosxAA in R , then siny+cosa is equal to

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  4. If alpha,beta,gamma are acute angles and costheta=sinbeta//sinalpha,co...

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  5. In triangle ABC, if cotA⋅cotC= 1 / 2 and cotB⋅cotC= 1 / 18 , then ...

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  6. Find the values of xa n dy for which cosec theta=(x^2-y^2)/(x^2+y^2) i...

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  7. The set of all x in the interval [0,pi] for which 2sin^2x-3sinx+1geq0 ...

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

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  9. sum(n=1)^ootan(theta/(2^n))/(2^(n-1)cos(theta/(2^(n-1)))) is

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

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  11. If r/(r1)=(r2)/(r3), then (a) A=90^0 (b) B=90^0 (c) C=90^0 (d) none ...

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

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

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  14. For each natural number nlt=2, prove that sinx1cosx2+sinx2c0sx+3++sinx...

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

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

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

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

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  19. 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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  20. The general solution of the equation sin^(100)x-cos^(100)x=1 is (a)2np...

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