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NARA [144]
3 years ago
6

HOW DO YOU FIND THE SINE, COSINE, AND TANGENT VALUES GIVEN A POINT ON A CIRCLE

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
7 0
When the circle is centered at the origin and the angle of interest (α) is measured counterclockwise from the positive x-axis, the trig functions can be determined from the coordinates of the point (x, y) and the radius of the circle (r) (which can also be determined from the coordinates of the point).

The radius is
  r = √(x² +y²)

The trig functions are (remember SOH CAH TOA?)
  sin(α) = y/r
  cos(α) = x/r
  tan(α) = y/x

These ratios hold regardless of quadrant.
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Express as a sum: 15–7
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-7+15. this is what i think it is.
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3 years ago
Erica buys 3.5 pounds of peanut butter. If each pound of peanut butter cost $6.40, how much will she pay for the peanut butter?
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Find the total cost

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2 years ago
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The measures of the three angles whose sum is 120° are in the extended ratio 2:5:8 find the exact angle measures
hoa [83]

Answer:

ans is 16°,40°and64°

let ratio be 2x,5xand 8x

Step-by-step explanation:

their sum=120°

2x+5x+8x=120

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5x=5×8=40°

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7 0
3 years ago
You earn $28 for washing 7 cars. How much do you earn for washing 6 cars?
iren [92.7K]

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Since you can earn 28 dollars by washing 7 cars, and you want to find the amount money you can make by washing 6 cars.

\frac{28}{7} = \frac{x}{6}

First, you should find the amount of money you can make by washing 1 car (unit rate).

\frac{28}{7} = \frac{x}{1}

To get from 7 to 1, you have to divide 7 by 7; 7 ÷ 7 = 1.

Do the same thing to the numerator; 28 ÷ 7 = 4.

Now you know how much you make by washing 1 car, you need to find how much you make by washing 6 cars.

\frac{4}{1} = \frac{x}{6}

To get from 1 to 6, you multiply by 6. 1 times 6 equals 6.

Now do the same thing to the numerator; 4 × 6 = 24.

You can earn 24 dollars by washing 6 cars.

━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━  

5 0
3 years ago
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