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Recent questions tagged trigonometry function
+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
Show that: cos 5θ = 16 cos^5θ – 20 cos^3θ + 5 cosθ
asked
Mar 7, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
trigonometric identities
class-10
jee mains
trigonometry function
+1
vote
1
answer
Prove that cosθ cosθ/2 - cos3θ cos9θ/2 = sin 7θ sin 8θ
asked
Mar 1, 2019
in
Class 11
by
kratos
trigonometry function
class-11
+1
vote
1
answer
If θ **** in the second quadrant, then show that
asked
Feb 11, 2019
in
Class 11
by
kratos
trigonometry function
class-11
+1
vote
1
answer
Find the value of: cos^-1(cos1) + cos^-1(cos2) + cos^-1(cos3) + cos^-1(cos4)
asked
Jan 31, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
class-9
jee mains
inverse trigonometric functions
trigonometry function
+3
votes
1
answer
The value of tan 9°− tan 27° −tan 63° + tan 81° is equal to A. -1 B. 0
asked
Jan 24, 2019
in
JEE
by
kratos
trigonometry
class-11
jee
class-10
jee mains
trigonometry function
+2
votes
1
answer
The value of tan 9° – tan 27° – tan 63° + tan 81° is (1) 2 (2) 3 (3) 4 (4) None of these
asked
Nov 16, 2018
in
Class 12
by
kratos
nda
trigonometry
class-11
class-10
trigonometry function
class-12
+2
votes
1
answer
Prove that tan 8θ / tanθ = (1 + sec2θ) (1 + sec4θ) (1 + sec8θ).
asked
Oct 18, 2018
in
JEE
by
kratos
trigonometry
class-11
jee
trigonometric identities
class-10
jee mains
trigonometry function
class-12
+1
vote
1
answer
A circular loop of conducting wire of radius 1 cm is cut at a point A on its circumference.
asked
Aug 28, 2018
in
Class 11
by
kratos
trigonometric ratio
trigonometry
class-11
angles
trigonometry function
trigonometric functions
+3
votes
1
answer
Find the value of tan 9° – tan 27° – tan 63° + tan 81°
asked
Aug 5, 2018
in
JEE
by
kratos
nda
trigonometry
class-11
jee
class-10
jee mains
trigonometry function
class-12
+2
votes
1
answer
Find the value of: (i) cos^-1(cos2) (ii) cos^-1(cos3) (iii) cos^-1(cos5)
asked
Jul 18, 2018
in
JEE
by
kratos
trigonometry
class-11
jee
class-9
jee mains
inverse trigonometric functions
trigonometry function
+3
votes
1
answer
If x = sin^8θ + cos^14θ, then for all values of θ, (A) x > 1 (B) x ≥ 1 (C) x < 1
asked
Jul 13, 2018
in
JEE
by
kratos
cbse
trigonometry
class-11
jee
class-10
jee mains
trigonometry function
class-12
+1
vote
1
answer
A hot body, initially at a temperature 8θ, is present in surroundings that are at a temperature θ.
asked
Jun 10, 2018
in
JEE
by
kratos
cbse
trigonometry
class-11
jee
jee mains
trigonometry function
class-12
+3
votes
1
answer
A circular wire of radius 3 cm is cut and bent so as to lie along the circumference
asked
Jun 4, 2018
in
Class 11
by
kratos
trigonometric ratio
trigonometry
class-11
angles
trigonometry function
trigonometric functions
+2
votes
1
answer
If sinθ + cosθ = 1, then find the general value of θ.
asked
May 22, 2018
in
Class 11
by
kratos
trigonometry function
class-11
+2
votes
1
answer
Solve the equation sin θ + sin 3θ + sin 5θ = 0
asked
Apr 29, 2018
in
Class 11
by
kratos
trigonometry function
class-11
+1
vote
1
answer
Prove that (sec8θ - 1)/(sec4θ - 1) = tan8θ/ tan2θ
asked
Mar 22, 2018
in
JEE
by
kratos
trigonometry function
jee
jee mains
class-11
+3
votes
1
answer
If A = cosθ^2 + sinθ^4 for all values of θ, then prove that
asked
Mar 15, 2018
in
Class 11
by
kratos
trigonometry function
class-11
+1
vote
1
answer
Find the value of √3 cosec 20° – sec 20°
asked
Jan 3, 2018
in
Class 11
by
kratos
trigonometry function
class-11
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