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g100num [7]
4 years ago
7

Ignore #11 and #13; just need help with #12. TYSM (18 point question)

Mathematics
1 answer:
zimovet [89]4 years ago
3 0

Answer:

22.5°

Step-by-step explanation:

it's a right angle which equals 90°

which is 4 times as much as x

so i just divided 90 by 4

however since you are using formulas it would be written

90 ÷ 4 = x

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What is sin 45°? O A. 1/2 12 1 OB. NI O C. 1 O D. O E. 1 3 O F. 13 ap.ex​
andrew-mc [135]

1/√2

Step-by-step explanation:

Imagine a right-angled triangle, for e.g. Triangle ABC,

Where

B = 90°

Remember your Toa Cah Soh.

sin 45° = opposite / hypotenuse

If theta = 45°

Angles A and C = 45° (Sum of angles in a triangle equal = 180°)

Since theta are the same, we can also deduce that the length AB and BC are the same.

Take for example AB = BC = 1 = opposite

By the Pythagorean theorem,

AB² + BC² = AC²

1² + 1² = AC²

2 = AC²

AC = √2 = hypotenuse

Therefore:

sin 45° = opposite / hypotenuse

sin 45° = 1/√2

6 0
3 years ago
If your string is 95 cm long and the second string is 650 mm, then how many mm are the two line segments together
Fed [463]

Answer:

1600mm

Step-by-step explanation:

total length of the line segment = length of the first string + length of the second string

to add the strings together, convert the length of the first string to millimetre

1cm = 10mm

95 x 10 = 950mm

950mm + 650mm = 1600mm

8 0
3 years ago
The slope-intercept form of the equation of a line that passes through point (–3, 8) is y = –x + 6. What is the point-slope form
Reptile [31]
Answer: y-8=-1(x+3)

the formula for pain-slope form is:

y-y_{1}=m(x- x_{1})

(where y_{1} =a known y coordinate & x_{1} =a known x coordinate.

Now just plug in the data...

y-8=-1(x--3)
y-8=-1(x+3)
5 0
3 years ago
name the subset(s) of real numbers to which the number zero belongs. choose all that apply. a. irrational numbers b. integers c.
torisob [31]
Whole numbers is my opion
5 0
3 years ago
The area of a rectangle playgrond is 138 square meters. If the length of the playground is 21 meters, what is its width?
Likurg_2 [28]

Answer:

6.57m i think

Step-by-step explanation:

5 0
3 years ago
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