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3 years ago

Which equation can be used to determine the reference angle, r, if Theta = StartFraction 7 pi Over 12 EndFraction?

Mathematics

2 answers:

lozanna [386]3 years ago

7 0

Answer:

r = pi minus theta

Step-by-step explanation:

Blizzard [7]3 years ago

3 0

Answer:

r= pi- theta on edg,.

Step-by-step explanation:

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Harlamova29_29 [7]

hello!!! i hope this helps you.but know that i could be wrong.

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3 years ago

Is 214.7 greater then 214.275

AlekseyPX

214.7 is greater than 214.275

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3 years ago

PLEASE HELP

ahrayia [7]

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4 years ago

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HELPPPP!!! ASAPPP!!!

erastova [34]

Answer:

A) sum = (180)(20) = 3600°

Step-by-step explanation:

The formula for the sum of interior angles for any polygon is (n-2) x 180° with n being the number of sides the polygon has.

We can just plug in 22 into the equation to get our answer:

(22-2) x 180°

= (20) x 180°

= 3600

7 0

3 years ago

On a coordinate plane, triangles P Q R and S T U are shown. Triangle P Q R has points (4, 4), (negative 2, 0), (negative 2, 4).

mamaluj [8]

Answer:

The answer is below

Step-by-step explanation:

Two triangles are said to be similar if their corresponding angles are equal and the corresponding sides are in proportion.

The distance between two points on the coordinate plane is given as:

$Distance=\sqrt{(x_2-x_1}^2+(y_2-y_1)^2 \\\\Therefore\ in\ triangle\ PQR:\\\\|QR|=\sqrt{(-2-(-2))^2+(4-0)^2}=4\\\\|PQ|=\sqrt{(-2-4)^2+(0-4)^2}=\sqrt{52}=2\sqrt{13} \\\\|PR|=\sqrt{(-2-4)^2+(4-4)^2}=6$

In triangle STU:

$|ST|=\sqrt{(-1-2)^2+(-2-(-4))^2}=\sqrt{13}\\\\|SU|=\sqrt{(-1-2)^2+(-4-(-4))^2} =3\\\\|TU|=\sqrt{(-1-(-1))^2+(-4-(-2))^2}=2$

|QR| / |TU| = 4/2 = 2

|PR| / |SU| = 6/3 = 2

|PQ| / |ST| = 2√13 / √13 = 2

Hence:

|QR| / |TU| = |PR| / |SU| = |PQ| / |ST|

Therefore, △PQR and △STU are similar triangles since the ratio of their sides are in the same proportion.

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3 years ago

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