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ASHA 777 [7]
3 years ago
6

If cos(t)=

ign="absmiddle" class="latex-formula"> evaluate cos(-t) and sec(-t)
Mathematics
1 answer:
Anna35 [415]3 years ago
8 0
<h3>Answer:</h3><h3>cos(-t) = -4/9</h3><h3>sec(-t) = -9/4</h3>

Explanation:

Since cosine is an even function, we can say cos(-t) = cos(t) for all values of t. So this explains why cos(-t) = cos(t) = -4/9. No change happens.

To find the secant value, we apply the reciprocal. This is because sec = 1/cos. So that's how -4/9 flips to -9/4.

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