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anonymous
 one year ago
Which of the following are trigonometric identities? Check all that apply.
A. sin^2 (x) + cos^2 (x) = 1
B. sec^2 (x) + csc^2 (x) = 1
C. tan^2 (x)  sec^2 (x) = 1
D. sec^2 (x)  tan^2 (x) = 1
anonymous
 one year ago
Which of the following are trigonometric identities? Check all that apply. A. sin^2 (x) + cos^2 (x) = 1 B. sec^2 (x) + csc^2 (x) = 1 C. tan^2 (x)  sec^2 (x) = 1 D. sec^2 (x)  tan^2 (x) = 1

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know that D is a trigonometric identity, however, I am not sure about the rest. Help would be much appreciated.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you gave the answer yourself :D if the last one is an identity, C cannot be an identity , look at its left hand side , its negativve of L.H.S in D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So A and B are not identities either?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0NO THEY ARE first one is an identity now if you take reciprocal of sin^2(x) and cos^2(x), it gives csc^2(x) and sec^2(x).. which provves second

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Great! Thank you! So the answers are A,B, and D!
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