Table Of Trig Function Values For Special Angles Page 2
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1
2θ
sin
θ
• Remember that
tan =
θ
cos
π
• Remember the unit circle. 0 and
lie on the x- and y-axes, respectively, which
2
lets you remember the coordinates (0,1) or (1, 0).
?
• You can fill in the table using the pattern
; sine counts up, cosine counts
2
down.
• You can use your calculator to remind you – but remember that 0.707 is a
2
different number from
. Also remember that you may sometimes have to
2
reproduce these values without your calculator to help you.
• Converting between radians and degrees -- 180º = π radians = half a circle.
Degrees are very small compared to radians – an angle will measure many
(almost 60 times as many) degrees as radians.
• Fractions of π radians are far more friendly than decimal radians.
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