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यदि (sin^(4)x)/2 + (cos^(4)x)/3 = 1/5 ,त...

यदि `(sin^(4)x)/2 + (cos^(4)x)/3 = 1/5` ,तब

A

`tan^2x =3/2`

B

`sin^8 x/8 + cos^8x/27 = 1/125`

C

`tan^2x =2/3`

D

`sin^8 x/8 + cos^8x/27 = 2/125`

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A DAS GUPTA-Objective Tests-Exercise
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  2. Let f be a non-negative function defined on the interval [0,1]dot If i...

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  3. यदि (sin^(4)x)/2 + (cos^(4)x)/3 = 1/5 ,तब

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  4. for 0ltthetaltpi/2 the solution(s) of sum(m=1)^6c o s e c(theta+((m-...

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  7. An ellipse intersects the hyperbola 2x^(2)-2y^(2)=1 orthogonally. The ...

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  8. Let L = lim(x rarr 0) ( a - sqrt( a^2 - x^2) - x^2/4)/x^4, a>0.If L is...

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  10. If In=int(-pi)^(pi) \ (sinnx)/((1+pi^x) \ sinx) \ dx, n=0,1,2,...... t...

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  11. The area of the region bounded by the curve y=e^(x) and lines x=0 and ...

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  12. Q. Let p and q real number such that p!= 0,p^2!=q and p^2!=-q. if alph...

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  13. Let S={1,,2,34} . The total number of unordered pairs of disjoint s...

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  14. For r= 0, 1,.....,10, let Ar,Br, and Crdenote, respectively, the coe...

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  15. The number of 3xx3 matrices A whose entries are either 0or1 and for wh...

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  16. If the angle A , B and C of a triangle are in arithmetic progession an...

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  17. Two adjacent sides of a parallelogram A B C D are given by vec A B...

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  18. The equation of the plane containing the straight line x/2=y/3=z/4 and...

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  19. If the distance of the point P(1,-2,1) from the plane x+2y-2z=alpha...

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  20. Let f,g and h be real-valued functions defined on the interval [0,1] b...

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