If the cos A = .83 then the arc cosine of .83 equals the angle

arc cosine (.83) = 33.901 degrees

Similarly, we look up the arc cosine of .55

arc cosine (.55) = 56.633 degrees

NOW we can look up the sine of 33.901 degrees and find it is the

sine of A and it equals 0.55776

the sine of 56.633 degrees = 0.83516 and that is the sine of B

**Answer:**

**Step-by-step explanation:**

We know this triangle has angles 30, 60, and 90 degrees. Triangles with these angles have a special relationship on the sides.

The side opposite to the 90 degree angle is 2 times of x.

The side opposite to the 60 degree angle is multiplied x.

We know the side opposite to 60 degree angle is 2, so x would be

However, we can't have an irrational number in the demoninator so we multiply the fractice by root 3 over root 3:

which gives us

**Answer:**

approximately 462.24

**Step-by-step explanation:**

The answer is 21x-25 because all you have to do is multiply the 1/4 by the 84x and then multiply 1//4 by negative 100. A simpler way of explaining this is just that you need to distribute