269 Answered Questions for the topic trigonometric identities
Trigonometric Identities Trigonometry
11/07/17
How do you find the exact value of this trig function without a calculator?
(1-(2(cos^2))(43.5°))/((sin84° sin7°)−(sin6° sin277°))
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities Math Homework Asap
10/16/17
If sin(26)+sin(24)=Sin(A), 0<A<90, then A=____ degrees.
I know this is with the sum-to-product identity, but I need help with the steps.
Follows
•
3
Expert Answers
•2
![]()
![]()
Trigonometric Identities
10/05/17
show that 1/(1-cos x) - 1/(1+cos x)=2cosec x cot x
show that 1/(1-cos x) - 1/(1+cos x)=2cosec x cot x
Follows
•
2
Expert Answers
•1
![]()
10/03/17
Find the exact value of cos 15 degrees= sqrt(A)(sqrt(B)+1)/4...what is A and what is B?
I know how to get the answer, but for some reason, they want it in this format and I'm not sure how to do it this way.
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities Trigonometry
10/01/17
Prove if this is true or false 1-sinϴ • cosϴ •tanϴ=cos^2ϴ and cos^2ϴ • tanϴ= sinϴ
Its two questions Prove if this is true or false 1-sinϴ • cosϴ •tanϴ=cos^2ϴ and cos^2ϴ • tanϴ= sinϴ
Follows
•
1
Expert Answers
•1
![]()
Solve the trigonometric equation for the interval 0<x<2pi
4 sin x cos x - 2√3 sin x - 2√2 cos x +√6=0
interval 0≤x<2pi
Follows
•
1
Expert Answers
•2
![]()
![]()
Trigonometric Identities Trigonometric Functions
09/14/17
By definition of amplitude, in order for a function to have an amplitude the function must be...
There are 2 possible answers I can choose from. Either Bounded or Continuous
Follows
•
2
Expert Answers
•1
![]()
08/17/17
Determine A, B and C so that the formula (cosx−5sinx)^2 = A cos2x + B sin2x + C is valid for all values on x. A, B och C are integers.
This is translated from a trigonometry problem in another language, I hope you understand it.
Follows
•
2
Expert Answers
•1
![]()
07/31/17
find the exact values of the expressions without solving for x.
If sin(x) = 1/4 and x is in quadrantI,find the exact values of the expressions without solving for x.
(a) sin(2x)
(b) cos(2x)
(c) tan(2x)
Follows
•
2
Expert Answers
•2
![]()
![]()
07/31/17
find the exact values of sin(a+b) and cos(a-b)
Given that sin(a)=2/3 and cos(b)=-1/5, with a and b both in the interval of pi - pi/2
Follows
•
2
Expert Answers
•1
![]()
07/30/17
Verifying Trig identity
Hello! I am having some trouble verifying a trig identity
sin(4x)=4cos^3(x)sin(x)-4sin^3(x)cos(x)
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities
07/27/17
Find the expression that is equal to (tan(theta)+cot(theta))^2:
a) tan^2(theta)+cos^2(theta)
b) 2tan(theta)cot(theta)
c) 2cot^2(theta)-1
d) sec^2(theta)+csc^2(theta)
Follows
•
2
Expert Answers
•1
![]()
Trig Question
Prove sec2x-1=sec2xsin2x, justify significant steps. (state identities used)
Follows
•
3
Expert Answers
•3
![]()
![]()
07/19/17
Trigonometry Proof
Please help me answer the following question! I'm stuck!
Prove that cos6ß + sin6ß = 1/4 + 3/4cos2ß
I've tried simplifying out the LHS into (cos2ß)3 + (sin2ß)3, but I don't know what to do...
more
Follows
•
3
Expert Answers
•2
![]()
![]()
07/11/17
find exact solution for x real in degrees. tan x = -2sinx, 0 ≤ x < 360
This is my work.
tanx = -2sinx
sinx/cosx = -2sinx
sinx = -2sinxcosx (multiply by cosx)
1 = -2cosx (divide by sinx)
-1/2 = cosx (divide by -2)
X can be 120...
more
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities
07/03/17
With reference to the definitions of sinhx and coshx show that: cosh^2 x-sinh^2 x =1
sinh x = (e^x-e^-x/2) and cosh x = (e^x + e^-x/2)
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities
07/03/17
With Reference to the standard right angle triangle, show that cosec^2 x =1+cot^2 x
Using Pythagoras, and making reference to a right angle triangle.
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities
07/03/17
Solve the equation giving all values of x which lie between 0 degrees and 360 degrees
1) 2sec x =4.6
2) 3cos^2 x + cos x-2 =0
3) Sech x =0.554
Follows
•
1
Expert Answers
•1
![]()
Trigonometric Identities Precalculus
07/02/17
How do you prove sin(4z) = [4tan(z)(1-tan^2(z))]/(1+tan^2(z))^2
Prove
sin4z = [4tanz(1-tan2z)]/(1+tan2z)2
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities
05/08/17
if sin theta is equal to 3/5 on the interval (pi/2 , pi), what is tan 2 theta?
if sin theta is equal to 3/5 on the interval (pi/2 , pi), what is tan 2 theta?
Follows
•
2
Expert Answers
•1
![]()
Trigonometric Identities
04/25/17
How to solve (sinx/1-cscx)-(sinx/1+cscx)= -2cot^2x?
I need to set the problem sides equal to each other. A step-by-step guide would be helpful. My entire class doesn't understand it.
Follows
•
3
Expert Answers
•2
![]()
![]()
Trigonometric Identities
04/14/17
1.Secy/coty + tany)2.tanycoty)(tany+ coty)3.( Siny + cosy)(secy + cscy)4.tany(cosy - cscy)5.Siny +cosy)(secy +cscy)6.(siny-cosy)^2 9.tan165)10.sin225)12.cos165)
These are multiple questions that I need help with. Numbers 1.( Ask to simplify) 2-6 (ask to multiply and simplify) and 9-14 ask to find angle sum and difference.
Note: I'm also looking for a...
more
Follows
•
1
Expert Answers
•1
![]()
Trigonometric Identities
04/13/17
(Siny - cosy) (siny + cosy)
I need to simplify using Pythagorean identities I need hel asap
Follows
•
3
Expert Answers
•2
![]()
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
