Saying arccos(-√2/2) is the same as saying cos(x)=-√2/2. This is one the trigonometric values you should have memorized if you are taking a a trig class. In order to get √2/2, x must be equal to 45° or pi/4. But since it is a negative √2/2, the answer would be -45°or -pi/4.
There are technically multiple answers to this, but since you weren't given a range for the answers, I would stick with -45°.
Hope this helps
<span>simlify it
81300-56800
= 24500
12
24500/12 = 2041.66666667
or
2040 dollars per month
so correct option is A
hope it helps</span>
Multiply $1.99 by 4 for the drinks . Then $1.20 by 4 for the muffins . Add both of the amounts from the drinks and muffins with the tip of $2.30 . Then subtract $30 from the other total . Then you have your answer .
The answer is A. 81 because 8 is 8 times 1 which is in the ones place.
The height of glass 1 which in cylindrical in shape is 7.6 centimeters. Since the total volume of water added by Celia is 100 cubic centimeter, and the volume of glass 2 is 26.4 cubic centimeter which is a conical in shape. Subtracting the volume of glass 2 from the total volume glass 1 can be calculated and its height.
