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Unit Circle
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4. = y/x
5. There are 4 of these in a unit circle.
7. sin(-x)=-sinx Is an example of
8. A way of remembering how to compute the
sine, cosine, and tangent of an angle.
10. Half of the unit circle is 90 ______
11. Tan^2u= 1-cos2u/2 is an example of what
identity
13. circle A circle with a radius of 1
14. Rational functions of sine and cosine wil
be very hard to integrate without this identity
15. and Difference sin(u+v)=sinu cosv + cosu
sin v is an Ex. of what identity
16. Trig identities that show how to find the
sine, cosine, or tangent of half a given angle.
17. cotX= 1/tanX is an example of
18. A unit circle is measured in _______
19. Sine and cosine are
1. sec^2x-1=tan^2x is what identity
2. Equals Y
3. When an angle lies along an axis, the
values of the trigonometric functions are
either 0, 1, -1, or
6. tanX= sinx/cosx is what type of identity
9. functions functions of an angle
12. Equals X
20. number Trigonometric form of a
___________ (2 words)