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Answer to Question #7522 in Trigonometry for Timothy Scaping

Question #7522
1 What is the identity of SinÂ
1cscÂ
1secÂ
1cotÂ
1tanÂ

2 What is the identity of CosÂ
1cscÂ
1cosÂ
1secÂ
1sinÂ

3 What is the identity of tanÂ
1cotÂ
1tanÂ
1cscÂ
1sinÂ

4 What is the identity of cosecantÂ
1sinÂ
1secÂ
1tanÂ
1cosÂ

5 What is Sin2x+Cos2x
tan2x
1
2
sec2x

6 What is cos2x
2cos2xÀ1
2sinxcosx
cosxsinx
cos2x

7 At what quadrant is 620
1st
3rd
2nd
4th

8 At what quadrant is 3100
3rd
4th
1st
2nd

9 Find the value of cos[40:70]
0.7581
0.3421
0.6347
0.1583

10 Find the value of cos[30:00]
0.8599
0.9833
0.8581
0.5
Expert's answer
1. 1/cscA
2. 1/secA
3. 1/cotA
4. 1/sinA
5. sin2x+cos2x=1
6. cos2x=2cos2x-1
7. 3th
8. 3th
9. -10. use your calculator

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