The equation sec2x- 1 = tan2x is an identity
O
O
A. True
B. False
1 answer:
Answer:
A. True.
Step-by-step explanation:
I am assuming that it's
sec^2 x - 1 = tan^2 x
Now sec^2 x - 1 = 1 / cos^2 x - 1
= (1 - cos^2 x) / cos^2 x
But 1 - cos^2 x = sin^2 x
so sec^2 x - 1 = sin^2 x / cos ^2 x
= tan^2 x.
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