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Recent questions tagged trigonometric ratios
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(tan 45°cosec 30°)+(sec 60°cot 45°)−(5 sin 90°/2 cos 0°)
asked
Mar 29, 2019
in
Class 10
by
kratos
trigonometry
class-9
class-10
trigonometric ratios
+1
vote
1
answer
If Sin 3θ = cos (θ – 6°) where 3 θ and θ − 6° are acute angles, find the value of θ.
asked
Mar 28, 2019
in
Class 10
by
kratos
cbse
trigonometry
class-8
trigonometric identities
class-10
trigonometric ratios
+2
votes
1
answer
If tan θ = a/b, show that (a sinθ - b cosθ)/ a sinθ + b cosθ) = (a^2 - b^2)/a^2 + b^2
asked
Mar 23, 2019
in
Class 10
by
kratos
class-10
trigonometric ratios
+2
votes
1
answer
The minimum value of f(x) = a tan^2x + b cot^2x equals the maximum value of g(x) = a sin^2x + b cos^2x where a > b > 0,
asked
Mar 17, 2019
in
JEE
by
kratos
applications of derivatives
class-8
jee
inverse trigonometry
trigonometric ratios
jee mains
inverse trigonometric functions
class-12
+3
votes
1
answer
Evaluate the following: cos 19°/sin 71°
asked
Mar 10, 2019
in
Class 10
by
kratos
trigonometry
class-8
class-9
class-10
trigonometric ratios
+3
votes
1
answer
Given matrix A = [(4 sin 30°, Cos 0°), (Cos 0°, 4 sin 30°)] and B = [4,5]
asked
Mar 7, 2019
in
Class 10
by
kratos
trigonometry
class-8
class-9
class-10
icse
trigonometric ratios
+3
votes
1
answer
Evaluate: 4/3tan^2120° + 3sin^2300° – 2cosec^2240°- cot^260°
asked
Mar 2, 2019
in
Class 11
by
kratos
trigonometric ratio
class-11
angles
trigonometric identities
class-10
trigonometric ratios
standard angles
allied angles
+3
votes
1
answer
If cot θ = 1/√3, show that (1-cos2θ)/(2-sin2θ)=3/5
asked
Feb 25, 2019
in
JEE
by
kratos
trigonometry
jee main 2020
jee
class-10
trigonometric ratios
jee mains
class-12
+1
vote
1
answer
If sin A = 3/5, cos B = 4/5 find sin(A + B) and cos(A – B). Where A and B are acute angles.
asked
Feb 22, 2019
in
Class 12
by
kratos
trigonometry
class-8
class-10
trigonometric ratios
class-12
+3
votes
1
answer
If ∠A and ∠B are acute angles such that sin A = Sin B prove that ∠A = ∠B
asked
Feb 19, 2019
in
Class 10
by
kratos
class-8
class-10
trigonometric ratios
+3
votes
1
answer
If ∠A and ∠B are acute angles such that tan A= Tan B then prove that ∠A = ∠B.
asked
Feb 18, 2019
in
Class 10
by
kratos
class-8
class-10
trigonometric ratios
+2
votes
1
answer
The maximum value of 3cosθ + 5sin(θ - π/6) for any real value of is:
asked
Feb 15, 2019
in
Class 10
by
kratos
trigonometry
trigonometric ratios of acute angles
kvpy
class-9
class-10
trigonometric ratios
+2
votes
1
answer
If a right ΔABC , right-angled at B, if tan A=1 then verify that 2 sin A . cos A = 1
asked
Jan 28, 2019
in
Class 10
by
kratos
class-8
class-10
trigonometric ratios
+1
vote
1
answer
Consider ΔACB, right-angled at C, in which AB = 29 units, BC = 21 units and ∠ABC =θ (see Fig. 8.10). Determine the values of
asked
Jan 25, 2019
in
Class 10
by
kratos
cbse
trigonometry
trigonometric identities
class-10
trigonometric ratios
+2
votes
1
answer
If tan θ = 15/8 , find the values of all T-ratios of θ.
asked
Jan 23, 2019
in
Class 10
by
kratos
class-10
trigonometric ratios
+3
votes
1
answer
If sin α = 1/2 prove that ( 3 cos α - 4 cos^2 α ) = 0
asked
Jan 21, 2019
in
Class 10
by
kratos
class-8
class-10
trigonometric ratios
+3
votes
1
answer
Number of solutions of the equation 4sin^2 x + tan^2 x + cot^2 x + cosec^2 x = 6 in [0, π] is
asked
Jan 20, 2019
in
Class 12
by
kratos
nda
cbse
trigonometry
class-11
class-10
trigonometric ratios
class-12
trigonometric functions
+1
vote
1
answer
The value of angle x and y is (a) 23°, 67° (b) 51.5°, 29.5° (c) 50°, 30° (d) 67.5°, 22.5°
asked
Jan 12, 2019
in
Class 10
by
kratos
trigonometry
class-8
circles
class-9
class-10
trigonometric ratios
geometry
+1
vote
1
answer
If cot θ = 3/4, show that √(secθ - cosecθ)/(secθ + cosecθ) = 1/√7
asked
Jan 4, 2019
in
Class 10
by
kratos
trigonometry
class-10
trigonometric ratios
+1
vote
1
answer
[(sin 20°, -cos 20°),(sin 70°, cos 70°)] = ? (a) 1 (b) -1 (c) 0 (d) 2
asked
Dec 20, 2018
in
Class 12
by
kratos
trigonometry
class-8
determinants
class-10
trigonometric ratios
class-12
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