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aleksandrvk [35]
4 years ago
15

State the reference angle for -75

Mathematics
1 answer:
boyakko [2]4 years ago
8 0

Check the picture below.

so, the reference angle, will be the angle made by it with the x-axis, namely 75°.

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Find all real numbers s such that -2(s - 7) > 4s + 8. Give your answer as an interval.
irga5000 [103]
Expand: -2s+14>4s+8, 6>6s, 1>s so s must be less than 1. This can be written [−∞,1).
4 0
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A 10-foot ladder leans against a wall so that it is 6 feet high at the top. The ladder is moved so that the base of the ladder t
konstantin123 [22]

Answer:

The top of the ladder is now at 10 ft.

Step-by-step explanation:

At the start, we have a height H=6, a length L=10 and a base B, that has to be calculated by the Pythagorean theorem:

B^2=L^2-H^2=10^2-6^2=100-36=64\\\\B=\sqrt{64}=8

The base is moved twice the distance the height moves up.

We called this distance x, so we have:

L^2=(H+x)^2+(B-2x)^2=H^2+2Hx+x^2+B^2-4Bx+4x^2\\\\L^2=(H^2+B^2)+5x^2+(2H-4B)x\\\\L^2=L^2+5x^2+(2H-4B)x\\\\0=5x^2+(2H-4B)x\\\\5x+(2H-4B)=0\\\\x=\dfrac{4B-2H}{5}=\dfrac{4*8-2*6}{5}=\dfrac{32-12}{5}=\dfrac{20}{5}=4

The new height (H+x) is

H'=H+x=6+4=10

The base travels 2x=8, so the new base B' is 0.

This means that the ladder is all against the wall (L=H').

6 0
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The tangent ration! helpp!!
Vitek1552 [10]

Answer:

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Step-by-step explanation:

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What’s the f stand for and use that to help you answer
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