Jsoh R.

asked • 06/07/16

trignometry identites questions

1.Why is it necessary to prove a trigonometric identity before using the identity?
2. If the identity 1+cot x=csc x is used in the proof of another identity, for what values of x is the proof valid?
Prove each identity. Show your steps 
1.sec(q)/tan(q)=csc (q)
2.sin(q)/1+sin(q )-  sin q/1-sin (q )= -2 tan^2 (q)
3.cos^2 (q)/1- sin(q)  - cos^2 q/1+sin(q)=2sin(q)

Michael J.

Question 2 does not have the correct identity.  Please check your references.


1 Expert Answer


Michael J. answered • 06/07/16

5 (5)

Understanding all Sines of Triangles

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