One way of going to it is to see that:
... are you sure you copied the Q down right?
(Trigonometric Functions and Identities)
1. Which of the following is equivalent to ?
A. sec2
B. (csc2) - 1
C. tan2
D. sin2
E.
Answer = C
I need to know how they managed to get to C as an answer. Help Please...
Thank you soo much.
I am studying for a Compass Math Placement test tomorrow. here is where I got question.
ACT's COMPASS System: Sample Questions for Trigonometry
I forgot that the 1 also has the Cos value under it. Thanks for the help.