Recent questions tagged trigonometric equations

+3 votes

1 answer

If 0 ≤ x <2π, then the number of real values of x, which satisfy the equation cos x + cos 2x + cos 3x +cos 4x =0, is (a) 3 (b) 5 (c) 7 (d) 9

asked Mar 16, 2019 in JEE by kratos

+2 votes

1 answer

Find the ****** of tan(x + 2x + 3x + ....... + nx).

asked Feb 26, 2019 in JEE by kratos

+3 votes

1 answer

It is given that t = px^2 + qx, where x is displacement and t is time. The acceleration of particle at origin is

asked Feb 10, 2019 in JEE by kratos

+3 votes

1 answer

Find the value of tan^-1 √3 -cot^-1(-√3).

asked Feb 6, 2019 in Class 12 by kratos

+2 votes

1 answer

Find the general solutions of the following equations: (i) sin x = 1/2 (ii) cos x = – √3/2 (iii) cosex x = – √2

asked Jan 11, 2019 in Class 11 by kratos

+3 votes

1 answer

Find the general solutions of the following equation Y = px + a/p.

asked Jan 9, 2019 in JEE by kratos

+1 vote

1 answer

Find the value of tan^-1 √3 - cot^-1 (-√3).

asked Jan 6, 2019 in Class 12 by kratos

+3 votes

1 answer

tan^-1 √3 - cot^-1(-√3) is equal to which of the following:

asked Dec 13, 2018 in JEE by kratos

+3 votes

1 answer

Solve the following equations: (i) cos x + sin x = cos 2x + sin 2x (ii) sin x + sin 2x + sin 3x = 0 (iii) sin x + sin 2x + sin 3x + sin 4x = 0

asked Dec 10, 2018 in Class 11 by kratos

+2 votes

1 answer

Find the values of x which satisfy the equation sin^–1 x + sin^–1 (1 – x) = cos^–1 x.

asked Dec 2, 2018 in JEE by kratos

+2 votes

1 answer

Find the general solutions of the following equations: (i) tan 2x tan x = 1 (ii) tan mx + cot nx = 0 (iii) tan px = cot qx

asked Nov 21, 2018 in Class 11 by kratos

+2 votes

1 answer

If x= 3 - 2√2 show that √x - 1/√x = ± 2

asked Oct 28, 2018 in Class 11 by kratos

+3 votes

1 answer

Solve: sin 6x = sin 4x – sin 2x

asked Sep 1, 2018 in Class 12 by kratos

+3 votes

1 answer

If 4 sin^2 θ + 2(√3 + 1) cos θ = 4 + √3, then general value of θ is

asked Aug 9, 2018 in JEE by kratos

+1 vote

1 answer

Solve the following equations: (i) 4 sin^2 x – 8 cos x + 1 = 0 (ii) tan^2 x + (1 – √3)tan x – √3 = 0

asked Aug 7, 2018 in Class 11 by kratos

+1 vote

1 answer

Which of the following values of a satisfy the equation

asked Jul 21, 2018 in Class 11 by kratos

+1 vote

1 answer

The smallest positive value of x (in radians) satisfying the equation logcos x (√3/2 sin x) = 2 – logsec x (tan x), is

asked Jun 30, 2018 in JEE by kratos

+2 votes

1 answer

Solve the following equations: (i) tan x + tan 2x + tan 3x = 0 (ii) tan x + tan 2x = tan 3x (iii) tan 3x + tan x = 2 tan 2x

asked Jun 11, 2018 in Class 11 by kratos

+2 votes

1 answer

Find the deviation of (x^2 - cosx)/sinx with repect to x.

asked Jun 8, 2018 in Class 12 by kratos

+1 vote

1 answer

Solve the following equations: (i) sin^2 x – cos x = 1/4 (ii) 2 cos^2 x – 5 cos x + 2 = 0 (iii) 2 sin^2 x + √3 cos x + 1 = 0

asked May 28, 2018 in Class 11 by kratos

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