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3 years ago

Find the value of each variable using sine and cosine. Round your answers to the nearest tenth.

Mathematics

1 answer:

balandron [24]3 years ago

3 0

Answer:

13.3 = t

31.3= s

Step-by-step explanation:

Remember that sinθ = $\frac{opposite}{hypotenuse}$ , cosθ = $\frac{adjacent}{hypotenuse}$ , and tanθ = $\frac{opposite}{adjacent}$ . (A good mnemonic to remember this is SOH-CAH-TOA).

Knowing this is true, we can solve for t and s.

sin(23°) = $\frac{t}{34}$

34sin(23°) = t

13.3 = t

cos(23°) = $\frac{s}{34}$

34cos(23°) = s

31.3= s

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4 years ago

Read 2 more answers

How do you find the area of a polygon in a coordinate plane

inna [77]

Step-by-step explanation:

The way that I would do it, would be to use the point distance formula to find the length of each side.

Distance formula: $\sqrt{(x2-x1)^{2} (y2-y1) ^{2} }$

After you use this formula to find the length of all sides of the polygon, you would need to use the appropriate area formula to find the area of the polygon.

Area of Triangle: A= 1/2 base times height

Area of Rectangle: A= length times width

Area of Square: A= s^2 where s is the length of the side

Area of Parallelogram: A= base times height

Area of Trapezoid: A= 1/2 times height (base 1 + base 2) where base 1 and base 2 are the parallel sides

Area of Kite or Rhombus: A= 1/2 (diagonal 1 times diagonal 2)

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3 years ago

Which ones are polynomials? Plz hurry

Gekata [30.6K]

Answer:

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Step-by-step explanation:

7 0

4 years ago

Solve the equation.<br> 7-4(2w + 1) = 9w-49+ w)<br> EEE.<br> W=<br> (Simplify your answer.)

tatiyna

$7 - 4(2w + 1) = 9w - 49 + w \\ 7 - 8w - 4 = 10w - 49 \\ 10w + 8w = 7 - 4 + 49 \\ 18w = 52 \\ w = \frac{52}{18} \\ w= 2.88$

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3 years ago

Nina has been saving her earnings from her lemonade stand. Nina has 70 dollars to spend. If she buys a new hat for 15 dollars, h

natta225 [31]

Answer:

13 bows

Step-by-step explanation:

Given that she has 70 dollars, if she buys a new hat for 15 dollars then the amount she would have left

= 70 - 15

= 55 dollars

If she is to buy bows with the remaining amount and each cost 4 dollars then the number of bows that can be bought

= 55/4

= 13 3/4

This means that she can buy 13 bows and will have 3 dollars left as the 13 will cost 52 dollars (13 * 4).

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3 years ago