Arccos(cos 7pi/2)
cos 7pi/2 = cos 630 = cos (630-360) = cos 270 = 0
arccos(0) = 90 since cos 90 = cos 270
(x): 0 - 30 - 45 - 60 - 90
sin (x) 0 - 1/2 - 1/2 √3 - 1/2 √3 - 1
cos (x) 1 - 1/2 √3 - 1/2 √3 - 1/2 - 0
tan (x) 0 - 1/√3 - 1 - √3 - ∞
Rules for sin cos tan value in each quadrant :
quadrant = I(0-90) - II (90-180)- III(180-270) - IV(270-360)
sin (x) = positive- positive - negative - negative
cos (x) = positive- negative- negative - positive
tan (x) = positive- negative- positive - negative
1/6 divided by 2
Keep, change, flip
1/6 * 1/2 = 1/12
Answer: 1/12
There are 7 games in each case.
4+10 = 14
14 ÷2= 7 games
Answer:
8x + 2y
Step-by-step explanation:
You need to use distributive property.
5(x + y)
5 · x = 5x
5 · y = 5y
3(x - y)
3 · x = 3x
3 · -y = -3y (don't forget the sign)
So,
5x + 5y + 3x - 3y
Arrange them,
5x + 3x + 5y - 3y
Simplify,
5x + 3x = 8x
5y - 3y = 2y
So,
8x + 2y
There is not enough information to answer this question. We need to also know the amount of money grapes cost to buy, once we know that, we can do simple math to find how which is cheaper.
If you know the amount of money for grapes, please give it to me so I can help you.
May I have brainliest please? :)