Trigonometry Answers

Write the complex number in trigonometric form, using degree measure for the argument of -0.85 - 6.01i

In parallelogram EFGH, EH=8, EF=11, and the measure of angle E is 110 degrees. Find the measure of diagonals HF amd EG

Please verify that sin(x) + tan(x)/ 1 + sec(x) = sin(x)

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

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An electric post was broken by a strong typhoon.It formed a right triangle with the ground.If a broken part makes an angle of 25 degrees with the other part,and the topmost part of the post which is post which is on the ground is 40 ft from the base,how tall was the post?

sec(pi/5)^2 - tan(pi/5)^2

What is the identity of SinÂ










1cscÂ



1secÂ



1cotÂ



1tanÂ









2What is the identity of CosÂ










1cscÂ



1cosÂ



1secÂ



1sinÂ









3What is the identity of tanÂ










1cotÂ



1tanÂ



1cscÂ



1sinÂ









4What is the identity of cosecantÂ










1sinÂ



1secÂ



1tanÂ



1cosÂ









5What is Sin2x+Cos2x










tan2x



1



2



sec2x









6What is cos2x










2cos2xÀ1



2sinxcosx



cosxsinx



cos2x









7At what quadrant is 620










1st



3rd



2nd



4th









8At what quadrant is 3100










3rd



4th



1st



2nd









9Find the value of cos[40:70]










0.7581



0.3421



0.6347



0.1583









10Fin

Dear Expert mathematicain,
what is the fundamentaal law of trigonometry?

best wishes,

Akhtar Rasool.