Answer:
4,9
Step-by-step explanation:
i looked it up on a website,uhhhhh i don't know if its completely write soooo.....
Answer: 81.66 or 81.6
Step-by-step explanation:
Ben mixed up the first two #s. he needs to make the 6 a 5 and 5 a 6
D and E. An acute angle is any angle that is less than 90(a right angle). A is an obtuse angle(more than 90). And B + C are right angles. Hope this helps you!
Answer: 
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Explanation:
Method 1
We can use the pythagorean theorem to find x.

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Method 2
Use the sine ratio to find x. You'll need a reference sheet or the unit circle, or simply memorize that sin(60) = sqrt(3)/2

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Method 3
Similar to the previous method, but we'll use tangent this time.
Use a reference sheet, unit circle, or memorize that tan(60) = sqrt(3)

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Method 4
This is a 30-60-90 triangle. In other words, the angles are 30 degrees, 60 degrees, and 90 degrees.
Because of this special type of triangle, we know that the long leg is exactly sqrt(3) times that of the short leg.

The short leg is always opposite the smallest angle (30 degrees).