angles
This angle has coordinates (0,1)(0,1) on the unit circle.
what is 90 or pie/2
The cosine of 0.is this value.
what is 1
The graph of sine starts at this y-value when x=0
0
sin 2 x +cos2 x=
1
Sine and cosine are commonly used to study these repeating patterns.
What are waves?
The sine of 30∘30∘ equals this value.
1/2
The ordered pair for 60∘
(1/2,radient3/2)
The graph of cosine starts at this y-value when x=0
1
This identity gives tanxtanx in terms of sine and cosine.
x=sin x/cos x
Engineers use trigonometry to measure the height of these structures.
buildings or towers
This angle has cosine equal to −1
180∘
The sine of 270∘
-1
The period of both sine and cosine is this.
2pie
The cosine of a negative angle equals this expression.
cos(-x)=cos x
This science uses sine and cosine to model sound waves
physics
The tangent of 45∘equals this number.
1
the angle has coordinates (square root -2/2,square root2/2)
135.
The amplitude of y=3 sin x is this number
3
The sine of a negative angle equals this expression.
sin (-x) = -sin x
GPS and navigation systems use this branch of math involving sine and cosine.
trigonometry
This quadrant has positive cosine and negative sine.
Quadrant IV
The cosine of 210∘is this value.
square root -3/2
The phase shift of y=cos(x−pie) is this.
pie units
This identity equals 1/cos x
sec x
This field uses trigonometric functions to create realistic graphics and animation.
computer graphics