Recent questions in Uncategorized

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1 answer 433 views

If 12 identical balls are to be placed in 3 identical boxes, then the probability that one of the boxes contains exactly 3 balls, is

asked Mar 22, 2021 in Uncategorized by Topper11 (2.8k points)

+2 votes

1 answer 290 views

The number of solution of the equation x+2tanx=π/2 in interval [0,2π] is

asked Mar 22, 2021 in Uncategorized by anonymous

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1 answer 397 views

The general solution of sin x − 3 sin2x + sin3x = cos x − 3 cos2x + cos3x is _________.

asked Mar 21, 2021 in Uncategorized by Topper11 (2.8k points)

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2 answers 752 views

A bird is sitting on the top of a vertical pole 20 m high and its elevation from a point O on the ground is 45°

asked Mar 19, 2021 in Uncategorized by Gyani

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1 answer 319 views

If x = √3/2 + i/2(i = √-1), then (1 + iz + z5 + iz8)9 is equal to -

asked Mar 15, 2021 in Uncategorized by Gyani

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1 answer 328 views

If (z - α)/(z + α) (α ∈ R) is a purely imaginary number and |z| = 2, then a value of α is :

asked Mar 15, 2021 in Uncategorized by Bharat

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1 answer 350 views

Let A={θϵ(-π/2π):3+2isinθ/1-2isinθ is purely imaginary} then the sum of elements in A is

asked Mar 15, 2021 in Uncategorized by Sarthak

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1 answer 212 views

Cos190.cos10+sin190.sin10= a)2 b)0 c)-1 d)1

asked Mar 14, 2021 in Uncategorized by Doubtly (98.9k points)

+1 vote

1 answer 567 views

The value of cos π/2^2.cosπ/2^3..... .cosπ/2^10.sinπ/2^10

asked Mar 14, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 988 views

tanA/(1-cotA) + cotA/(1-tanA) can be written as

asked Mar 11, 2021 in Uncategorized by anonymous

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1 answer 619 views

cos210° - cos10°cos50° + cos250° is equal to (1) 3/2 (2) 3/4 (3) 3/2(cos20° + 1) (4) 3/4(cos20° + 1)

asked Mar 11, 2021 in Uncategorized by anonymous

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1 answer 232 views

Two vertical poles of heights, 20 m and 80 m stand a part on a horizontal plane

asked Mar 10, 2021 in Uncategorized by anonymous

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1 answer 493 views

If cos (α + β) = 4/5 and sin (α – β) = 5/13 , where they lie between 0 and π/4, find the value of tan2α

asked Mar 10, 2021 in Uncategorized by anonymous

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1 answer 651 views

If alpha=cos^-1(3/5) , beta=tan^-1(1/3), where 0<alpha,beta<π/4 , then alpha-beta is equal to

asked Mar 10, 2021 in Uncategorized by anonymous

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1 answer 634 views

The maximum value of 3cos theta+5sin{theta-π/6) for any real value of theta is

asked Mar 10, 2021 in Uncategorized by anonymous

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1 answer 278 views

The sum of all values of θ ∈ (0, π/2) satisfying sin2 2θ + cos4 2θ = 3/4 is

asked Mar 10, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 327 views

If 5(tan 2 x−cos 2 x)=2cos2x+9, then the value of cos4x is

asked Mar 9, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 217 views

Functions jee main important imp notes

asked Mar 8, 2021 in Uncategorized by Topper11 (2.8k points)

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