Let's derive the equation sin2x + cos2x=1 from the pythagorean formula.
A right triangle with angle x will have a leg that is adjacent to angle x and it will have a leg that is opposite to angle x. There will also be a hypotenuse.
From trigonometry, a right triangle with a given angle x, can defined as follows:
(sinx)/(cosx-sinx)=cotx+1, find x
The question is-
In a △PQR, if 3sinP+4cosQ = 6 and 4sinQ+3cosP=1, then the angle R is equal to:
Hi, this is my first time using this site.
So I have been staring at this trigonometric equation for a long while and looking for what it asks for. For what I know, I think I have to use sum of...
Prove sin4x = 4 (sin x-2 sin^3 x)/secx
I can't seem to solve this! Halp!!!
Solve the given equation over the interval [0,2): 2sinx+ (sqrt 3) sin^2x=-(sqrt 3) cos^2x
A. x=0, and x=(pi/2), and x=(3 pi/2), and x=2(pi)x=(3 pi/2), and x=(7 pi/2)
b. x=(4 pi/3) and...
Find the value for sin (θ) if the following conditions hold: cos(2(theta)) = 3/5 and 90(degrees) < (theta) < 180(degrees)
A. (1/25) B. (sqrt5/25) C. (2 sqrt5/5) D. (sqrt5/5)
How to prove this identity?
I thought it'd be (1 / cos(θ)2) * (1 / tan(θ)) * (cos(θ) / 1)
Which would get you cos(θ) / cos(θ)2 * tan(θ)
And then coming out to 1 / cos(θ) *...
Please help me solve this equation to better help me to understand trig Identites.
I am a little confused on this and it would be nice if someone could work through it so I can understand this problem
1) (cscx + cotx) / (tanx + sinx) = cotxcscx
2) (1/secx) -secx = -sinx
3) (1-tan^2x / 1-cot^2x) = -tan^2x
could someone explain finding cos(11pi/12) using Sum and difference Identities.
it must use one of these: