4 years ago

Hey, I'm a bit rusty on math. Please provide an answer with an explanation :-)

1 answer:

5 0

$x_{1} =-8 \\ x_{2} = -1$

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Delicious77 [7]

You change the improper fraction into a mixed number. So 25/3 equals 8

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4 years ago

Maru [420]

Answer:

Option 4

Step-by-step explanation:

Given:

Sinθ = $\frac{15}{17}$

Since, cos2θ = 1 - 2sin²θ

cos2θ = $1-2(\frac{15}{17})^2$

cos2θ = 1 - $\frac{450}{289}$

cos2θ = $\frac{289-450}{289}$

cos2θ = $-\frac{161}{289}$

Therefore, Option 4 will be the answer.

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3 years ago

Ber [7]

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4 years ago