Verify and show all steps needed please:
1.) cosx= 1/secx

2.) sin^2x-cos^2x=1

3.) cotx= sinx/cosx

4.) sinx= 1/ cscx

5.) 1+tan^2x=sec^2x

6.) 1/sinx=secx

Question

Verify and show all steps needed please:
1.)     cosx= 1/secx 

2.)    sin^2x-cos^2x=1

3.)   cotx= sinx/cosx

4.)   sinx= 1/ cscx

5.)  1+tan^2x=sec^2x

6.)  1/sinx=secx

anonymous · Answer

1, 4 and 6 are reciprocal identities.    How does your teacher want you to verify them?

karinamtz0213 · Answer

anyway possible as long as can be verifies correctly.

anonymous · Answer

Is it a matter of plugging in values?  For example:

sin 30° = 1/2 (y/r)
csc 30° = 2 (r/y)

so sin 30° = 1/csc 30°?

karinamtz0213 · Answer

No. You have to make one of the sides equal the other side and no values are used.

anonymous · Answer

I'm rather new to trig functions, but one of our identities is sine is the reciprocal of 1/cosecant.  I'm sorry ... I just don't know how you'd verify that. :(

anonymous · Answer

Oops... I meant that sine is the reciprocal of cosecant.