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Recent questions tagged trigonometric functions
+3
votes
1
answer
If tan x = 3/4 and x **** in the third quadrant, find sin X.
asked
Apr 7, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
class-9
jee mains
trigonometric functions
+3
votes
1
answer
Prove that: (sin x + sin 3x)/(cos x + cos 3x) = tan 2x
asked
Apr 7, 2019
in
Class 11
by
kratos
class-11
trigonometric functions
cbse
+2
votes
1
answer
Prove that cos 2x cos x/2 - cos 3x cos 9x/2 = sin 5x sin 5x/2
asked
Apr 6, 2019
in
Class 11
by
kratos
cbse
trigonometry
class-11
trigonometric identities
trigonometric functions
+2
votes
1
answer
If x^siny = y^sinx then find dy/dx.
asked
Apr 4, 2019
in
Class 12
by
kratos
trigonometry
class-12
class-11
trigonometric functions
+3
votes
1
answer
If A, B, C, D are the angles of a quadrilateral, then (tanA + tanB + tanC + tanD)/(cotA + cotB + cotC + cotD) is equal to
asked
Apr 3, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
trigonometric identities
class-10
jee mains
trigonometric functions
+1
vote
1
answer
Find the value of sin (31π/3)
asked
Apr 2, 2019
in
JEE
by
kratos
cbse
trigonometry
class-11
jee
jee mains
trigonometric functions
+3
votes
1
answer
If 2 sec 2α = tanβ + cotβ then one of the values of (α+β) =
asked
Apr 1, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
trigonometric ratios of acute angles
trigonometric identities
class-9
class-10
jee mains
trigonometric functions
+3
votes
1
answer
Find the general solution for which cos4x = cos2x.
asked
Apr 1, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
jee mains
trigonometric functions
+3
votes
1
answer
Find the maximum and minimum values of each of the following trigonometrical expressions: (i) 12 sin x – 5 cos x
asked
Apr 1, 2019
in
Class 11
by
kratos
class-11
trigonometric functions
+1
vote
1
answer
The number of solution of cosx + cos2x + cos3x + cos4x = 0, x ∈ [0, 2π] is (a) 4 (b) 5
asked
Mar 30, 2019
in
JEE
by
kratos
class-11
jee
trigonometric identities
jee main
trigonometric functions
+3
votes
1
answer
If a, b, c the sides of ΔABC are in A.P. and a is the smallest side then cosA equals
asked
Mar 28, 2019
in
JEE
by
kratos
properties of triangles
trigonometry
class-11
jee
determinants
class-10
jee mains
class-12
trigonometric functions
+2
votes
1
answer
Prove that: cos^3 x sin 3x + sin^3 x cos 3x = 3/4 sin 4x
asked
Mar 27, 2019
in
Class 11
by
kratos
class-11
trigonometric functions
cbse
+3
votes
1
answer
Find the area of the minor segment of a circle of radius 42 cm, if the length of the corresponding arc is 44 cm.
asked
Mar 26, 2019
in
Class 11
by
kratos
class-11
circles
class-9
class-10
areas related to circles
trigonometric functions
+3
votes
1
answer
Show that the line (x – 2) cosθ + (y – 2) sinθ = 1 touches a circle for all values of θ. Find the circle.
asked
Mar 25, 2019
in
JEE
by
kratos
straight lines
circle
determinant
class-11
jee
conic sections
jee mains
trigonometry function
trigonometric functions
+3
votes
1
answer
Give one example each of 2° and 3° amine with IUPAC names.
asked
Mar 24, 2019
in
Class 12
by
kratos
class-11
class-12
hydroxy compounds and ethers
trigonometric functions
+1
vote
1
answer
Find the value of the trigonometric function sin (– 11π/3 )
asked
Mar 24, 2019
in
Class 11
by
kratos
trigonometry
class-11
trigonometric functions
+3
votes
1
answer
Prove that cos3x = 4cos^3 x -3cosx .
asked
Mar 24, 2019
in
JEE
by
kratos
class-11
jee
indefinite integration
jee mains
trigonometric functions
+2
votes
1
answer
If ∫ sec x (sec x tan x f(x) + (sec x tan x + sec^2 x)) dx = e^secx f(x) + C, then a possible choice o f(x) is :
asked
Mar 23, 2019
in
JEE
by
kratos
trigonometric functions
jee mains 2019
class-12
jee mains
class-11
indefinite integral
integrals
indefinite integration
jee
+2
votes
1
answer
Prove that: cos(pi/4 - x)cos(pi/4 - y) - sin(pi/4 - x)sin(pi/4 - y) = sin(x + y)
asked
Mar 23, 2019
in
Class 11
by
kratos
class-11
trigonometric functions
cbse
+3
votes
1
answer
Solve: sin2x dx
asked
Mar 23, 2019
in
JEE
by
kratos
limits
class-11
jee
differential equations
jee mains
class-12
trigonometric functions
continuity
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