Trig Functions/Radians for Special Angles (0,30,45,60,90 degree)
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tan (90 degrees)
undefined
cosecant
hypotenuse/opposite
cos (90 degrees)
0
sin (90 degrees)
1
tan (45 degrees)
1
cos (60 degrees)
1/2
sin (30 degrees)
1/2
cosine
adjacent/hypotenuse
cotangent
adjacent/opposite
reference angle
angle that is always acute (+) measured to the x-axis
co-terminal angle
both angles "terminate" at the same spot
secant
hypotenuse/adjacent
tangent
opposite/adjacent sine/cosine
sine
opposite/hypotenuse
60 degrees in radians
pi/3
45 degrees in radians
pi/4
30 degrees in radians
pi/6
cos (45 degrees)
√2/2
sin (45 degrees)
√2/2
tan (60 degrees)
√3
cos (30 degrees)
√3/2
sin (60 degrees)
√3/2
tan (30 degrees)
√3/3
