Simplify
Simplify
\tan x \cos x
What is
\sin x ?
The exact value of
\sin 105^o
What is
(sqrt6 + sqrt 2)/4 ?
The exact value of
sin 2\theta
when given
sin \theta = 4/5, \qquad cos \theta <0
What is
- 24/25 ?
The exact value of
cos (\pi/8)
What is
(sqrt(2+sqrt2))/2 ?
The exact value of
cos^-1(1/2)
What is
pi/3 ?
The solution on the interval
[0^o, 360^o) \qquad of \qquad 2cosx+1=0
What is
120^o, 240^o ?
Simplify
(\cot \theta ) / (\csc \theta)
What is
\cos \theta ?
The exact value of
\cos (\pi/3) \cos((2\pi)/3) - \sin(\pi/3)\sin((2\pi)/3)
What is
-1 ?
The exact value of
cos 2x
when given
tan x = 2, \qquad cos x >0
What is
- 3/5 ?
The exact value of
tan 195^o
What is
2-sqrt3 ?
The exact value of
sec^-1(-1)
What is
pi ?
The solution on the interval
[0,2pi) \qquad of \qquad 2tanx+1=-1
What is
(3pi)/4, (7pi)/4 ?
Simplify
(\csc \theta \sec \theta) / \cot \theta
What is
\sec ^2 \theta ?
Simplify
\sin((3pi)/2-x)
What is
- \cos x ?
The exact value of
2cos^2 15^o -1
What is
sqrt 3/2 ?
The exact value of
sin 67.5^o
What is
(sqrt(2+sqrt2))/2 ?
The exact value of
sin (tan^-1 (3/2))
What is
(3sqrt13)/13 ?
The solution on the interval
[0^o,360^o) \qquad of \qquad 2cos^2x+cosx-1=0
What is
60^o, 180^o, 300^o ?
Simplify
(1+\tanx)^2-2\tanx
What is
\sec^2 x ?
Simplify
\sin (x+y)+\sin(x-y)
What is
2 sin x cos y ?
The exact value of
\cos ^2 15^o - \sin ^2 15^o
What is
sqrt3 / 2 ?
The exact value of
cos(x/2)
given
cosx=1/4, \qquad 0<x<pi/2
What is
sqrt10/4 ?
The exact value of
tan (cos^(-1) (3/4))
What is
sqrt7 / 3 ?
The solution on the interval
[0,2pi) \qquad of \qquad 2sin(x/2)=1
What is
pi/3, (5pi)/3 ?
Simplify
\sin^2 \beta (1+\cot^2 \beta)
What is
1?
Simplify
(\cos (A-B)) / (\cosA \sin B)
What is
\tanA + \cot B ?
Simplify
cos^4x-sin^4x
What is
cos 2x ?
Simplify (in terms of x)
sec^2 (x/2)
What is
2 / (1 + cos x) ?
The exact value of
tan(2\cos^-1 (1/4) )
What is
- sqrt15 / 7 ?
The solutions on the interval
[0,2pi) \qquad of \qquad cosx-1=cos2x
What is
pi/3, pi/2, (3pi)/2, (5pi)/3 ?