3 years ago

In the triangle CDE, point Y is the midpoint of segment CD and point X is the midpoint of segment DE,

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Answer:

Option A. 8 will be your answer

Step-by-step explanation:

hope it helps you

have a great day!!!

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If cos x=8/17, and 270° < x < 360° what is cos(2x)?

svp [43]

Answer: $\bold{-\dfrac{161}{289}}$

Step-by-step explanation:

Given: cos x = $\dfrac{8}{17}$ , x is in Quadrant 4

Use Pythagorean Theorem to find sin x:

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y² = 17² - 8²

y² = 289 - 64

y² = 225

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Use the double angle formula to find cos (2x):

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3 years ago

Simplify -2.3f+0.9f-14-4

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Answer:

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Step-by-step explanation:

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