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Dafna11 [192]
3 years ago
5

If cosA=2/5, find the value of 4+4 tan^2A

Mathematics
1 answer:
Andrew [12]3 years ago
7 0
The first equation is given to determine A.

cos A = 2/5
A = cos⁻¹(2/5) = 66.42°

Now that we know A, we use this value to the second equation.

4 + 4tan²A = 4 +24.996 4tan²(66.42°) = 24.996 ≈ <em>25</em>
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Answer:

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3 years ago
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