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4 years ago

15

Trigonometry Unit Circle question (see photo)

1 answer:

zepelin [54]4 years ago

5 0

The answer is Choice A: (cos(theta), sin(theta))

More specifically x = cos(theta) and y = sin(theta) make up the point (x,y) which is where point P is located. Because we have a unit circle, the equation of the circle is x^2+y^2 = 1. This leads to cos^2(theta) + sin^2(theta) = 1 which is the pythagorean trig identity.

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Simplify. Assume that all variables are positive.

mihalych1998 [28]

Answer: $-3x^{2} y\sqrt[3]{2y}$

Step-by-step explanation:

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3 years ago

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4 years ago

Write the equation y = 3x - 7in<br> standard form.

Kay [80]

Answer:

3x - y = 7

Step-by-step explanation:

point slope form: y= mx + b

standard form: ax + by= c

y= 3x - 7

- subtract 3x from each side

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- because "a" in the standard for equation can not be a negative number, multiple each side by -1

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4 years ago

Read 2 more answers

Please help what’s the answer ??

ivolga24 [154]

Answer:

x = 8

In all the boxes, you will first subtract 8 with 2, which will be 6. Then you will add them.

6 + 6 + 6 = 18

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3 years ago

Sarah has a bag of 50 skittles, some are red and some are yellow. Sarah randomly pulls a skittle out of the bag and records it,

Leno4ka [110]

Answer:

20

Step-by-step explanation:

Assume n is the number of times she pick a skittle out of the bag

The probability she pick out red : 8/n

The probability she pick out yellow : 12/n

=> The ratio of red and yellow skittle : 8/n : 12/n = 8/12 = 2/3, means every 2 red skittles we have 3 yellow ones.

But we have 50 skittles, so the likely numbers of reds in the bag is = 2* $\frac{50}{5}$ = 20

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4 years ago