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Musya8 [376]
3 years ago
9

Help please ASAP !!!!!!!!!!!

Mathematics
1 answer:
LuckyWell [14K]3 years ago
6 0
I think that it is the first one

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If θ is a first-quadrant angle in standard position with P(u, v) = (3, 4), evaluate cos 2 θ . -7/25 -1/5 7/25
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Answer:

-7/25.

Step-by-step explanation:

From the given point P we see that the hypotenuse =  √(3*2 + 4^2) = 5.

So cos  θ = 3/5

cos 2 θ =  2 cos^2 θ - 1

= 2 * (3/5)^2 -1

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