1. Which of the following is equivalent to (1 - cosine squared of theta) over cosine squared of theta ?
A. sec2theta
B. (csc2theta) - 1
C. tan2theta
D. sin2theta
E. - (1 over sine squared of theta)
2007-06-12 04:59:00 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(1-cos^2 x )/cos^2 x = sin^2 x / cos^2 x = tan^2 x
I did that because the answer other answer was not on your list which is
(1-cos^2 x )/cos^2 x = sec^2 x -1
Just substitute all the x's with theta
So, answer is C!
2007-06-12 05:07:10 · answer #1 · answered by the DoEr 3 · 0⤊ 0⤋
Let x = theta
(1-cos^2 x)/cos^2x
= (sin^2 x)/cos^2 x = tan^2 x
The answer is C
2007-06-12 05:08:02 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
There is a trig identity that says sin^2(theta) + cos^2(theta) = 1. Therefore 1 - cos^2(theta) = sin^2(theta).
this gives us sin^2(theta)/cos^2(theta) which I believe is tan^2(theta)
C.
2007-06-12 05:04:33 · answer #3 · answered by Math Stud 3 · 0⤊ 0⤋
O Sikander, O Sikander O Sikander, Jhaank Le Jhaank Le Apne Dil Ke Andar from Corporate
2016-05-18 01:33:12 · answer #4 · answered by ? 3 · 0⤊ 0⤋
c
2007-06-12 05:13:05 · answer #5 · answered by zaheen797 3 · 0⤊ 0⤋
c.tan^theeta
(1-cos^A)=sin^A
(1-cos^A)/cos^A
=sin^A/cos^A
=tan^A
2007-06-12 05:05:50 · answer #6 · answered by Anonymous · 0⤊ 0⤋