# Trig

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 Author: switch2002 ID: 194862 Filename: Trig Updated: 2013-02-09 16:44:10 Tags: Vocab Formulas Folders: Description: Trig Show Answers:

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1. Sum of angles in a Triangle
180
2. Complementary Angle
total 90 degrees
3. Supplementary Angle
total 180 degrees
4. Acute Angle
>0 but < 90
5. Obtuse Angle
6. Strait Angle
7. Right Angle
8. 45-45-90 Triangle
1. the two legs are equal
2. Hypotenuse is the lengh of either side
9. 30-60-90 Triangle
1. longer leg is sqrt.3 times lengh of shorter leg
2.hypotenuse is 2 timeslenght of shorter leg
10. Equilaterial Triangle
equal sides
11. Isoscoles Triangle
12. Scalene Triangle
no equal sides
13. the 6 trig function names
• sine cosine tangent
• recipricals
• cosecant secant cotangent
14. sin=  cos=  tan=
sin= y/r  cos=x/r  tan= y/x
15. csc=  sec= cot=
csc= r/y   sec= r/x   cot= x/y
16. Sin 0 degrees
0
17. Sin 30 degrees
1/2
18. Sin 45 degrees
sqrt 2/2
19. Sin 60 degrees
sqrt 3/2
20. Sin 90 degrees
1
21. Cos 0 degrees
1
22. cos 30 degrees
sqrt 3/2
23. cos 45 degrees
sqrt 2/2
24. Cos 60 degrees
1/2
25. cos 90 degrees
0
26. Tan 0 degrees
0
27. tan 30 degrees
1/ sqrt 3
28. tan 45 degrees
1
29. tan 60 degrees
sqrt 3
30. tan 90 degrees
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