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MakcuM [25]
3 years ago
8

HAVE A NICE DAY WILL GIVE BRAINLST :)

Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
6 0

first one is 40 and then 65 and then 65 again

777dan777 [17]3 years ago
5 0

Answer:

x = 40°

y = 65°

n = 65°

Step-by-step explanation:

6:

70 + 70 = 140

180 - 140 = 40

7:

55 + 60 = 115

180 - 115 = 65

8:

180 - 50 = 130

130 / 2 = 65

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For the first part, the answer is choice B) 360. This applies to any polygon and it doesn't have to be an octagon. The sum of the exterior angles of any polygon is always 360 degrees. This is something you should memorize or have on a reference sheet.

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5 0
3 years ago
When Θ = 5 pi over 6, what are the reference angle and the sign values for sine, cosine, and tangent? Θ' = negative pi over 6; s
timama [110]

Answer:

Option C is correct.

Step-by-step explanation:

\theta=\frac{5\pi }{6}

We need to find reference angle and signs of sinФ, cosФ and tanФ

We know that \theta=\frac{5\pi }{6}radians is equal to 150°

and 150° is in 2nd quadrant.

So, Ф is in 2nd quadrant.

And In 2nd quadrant sine is positive, while cos and tan are negative

The reference angle Ф' is found by: π - Ф

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so, Reference angle Ф' = π - 5π/6

Ф' = 6π - 5π/6

Ф' = π/6

So, Option C Θ' = pi over 6; sine is positive, cosine and tangent are negative is correct.

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Step-by-step explanation:

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Step-by-step explanation:

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