266 Answered Questions for the topic trigonometric identities
Proove that tanx/secx+1 = 2cosx-2cos^2/sin2x
Use trigonometric identities to transform the left side of the equation to the right side (0 < θ < π/2).
1) sinθ/cosθ + cosθ/sinθ = cscθsecθ2) (tanB + cotB)/tanB=csc^2B
Express the following in terms of sinx
1). cosx (2cosx - 3tanx)I need to use one or both of the following equations as these are the only ones we have been taught so far: i). cos2x + sin2x = 1ii). tanx = sinx / cosx
Given Cos (2x)= -24/25, 2nd Quadrant (pi/2 <x< pi); What is Sin(x) ?
Am I missing something big here? I've gotten around to making sin(2x)=7/25 but I don't understand how to go from double angle to single angle using identities.
cos3x = 1- 3cosx Solve for x
what I did:cos(2x + x) = 1-3cosxused compound angle formulacos2xcosx - sin2xsinx = 1- 3cosxused double angle formulae for both cos2x and sin2x(1-2sin^2x)cosx - 2sin^2xcosx = 1-3cosxbut I'm stuck... more
Prove that cos(x)tan(x) divided by cosec(x)^2 equals cos(x)^3 divided by cot(x)^3
Prove that cos(x)tan(x) / cosec(x^2) = cos(x)^3 / cot(x)^3
prove that cos(90°-θ)/tan(180°+θ)=cos(360°-θ)
Proof of trigonometric identity
Trigonometric Identities Trigonometric Functions
fiind all solutions at interval [0,2pi] sin^2x - cos^2x = 0
find all the solutions at the interval [0,2pi] for the equation sin^2 x - cos^2 x = 0
(sin x + sin 3x + sin 5x )/ (cos x + cos 3x + cos 5x) = tan 3x
how do you prove this identity (using a level maths)
Suppose the θ is an acute angle and cosθ = 4/5. Using the results sin2x = 1/2*(1 - cos2x) and cos2x = 1/2*(1 + cos2x), find the exact values of cos1/2θ, sin1
Suppose the θ is an acute angle and cosθ = 4/5. Using the results sin2x = 1/2*(1 - cos2x) and cos2x = 1/2*(1 + cos2x), find the exact values of cos1/2θ, sin1/2θ, and tan1/2θ
The trigonometric ratio of 13pi/3 are same as that of?
pi/3, pi, pi/6 or 11pi/3??
Points of discountuity
how do we find pointa of discountity of trignometric functions such as tan^-1(5x) or sec(5x)
Trigonometric Identities Parametric Equations
How to simplify trigonometric equations? (See details below)
Here is the question I'm stuck on: The motion of point P is given by the following equations: x(t) = -2 sin (t) cos (t) y(t) = cos (2t) The path traced by point p is called curve... more
Verify the identity. sin quantity x plus pi divided by two = cos x
Verify the identity. cotangent of x to the second power divided by quantity cosecant of x plus one equals quantity one minus sine of x divided by sine of x
Verify the identity. 4 csc 2x = 2 csc2x tan x
Cos theta = -4/9 with theta in quadrant 2, find sin theta
I don’t know the answer .
solve and put in a trig equation
25 cos(2t)+12 sin(t+π/2)+2 cos^2(t)
verify the identity cot(x-pi/2)=-tanx
How to simplify trigonometric equations? (see details of question!)
This is the questions I'm stuck on: Solve algebraically: f(x) = g(x) when f(x) = 4sin(2x)cos(2x)+2 and g(x)= 4sin(3x)sin(2x) + 2 1. I equated the equations 4 sin(2x)cos(2x)+2... more
If y=sin 0, what is sec 0 in terms of y?
Very the identity
cos(x-y) / sin(x)sin(y) = cot(x)cot(y)+1
How to find coordinates on terminal arm
The angle theta is in the first quadrant and sin of theta = 2/sqrt(13) determine the possible coordinates for point P on the terminal arm
Trigonometric Identities Trig Functions
if sin of A = 5/13, in quad 1, find tan A/2 and a few others
if sin of A = 5/13, in quad 1, find tan A/2 if cos of A = -4/5, in quad 2, find sin A/2 if cos A =-4/5 in quad 2, find cos A/2 if cos A - -4/5 in quad 2 find cos 2A