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Fantom [35]
3 years ago
8

How to do this trig question?

Mathematics
1 answer:
Mkey [24]3 years ago
7 0

Answer:

51.3 degrees

Step-by-step explanation:

You use the tangent function. You know that tangent of an angle, y, is opposite/adjacent. Set up an equation:

tan(y) = 10/8

You use the inverse tangent (NOT COTANGENT) function, and you get:

y = tan^-1 (10/8)

Type this in your calculator, and you get 51.3 degrees.

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Evaluate n+2x2 when n=3 and x=−2.
krok68 [10]

Answer:

When n=3 and x=−2  the answer is 11.

Step-by-step explanation:

Given:

Let p (n,x) be the function such that

p (n,x) = n + 2x^{2}

To Find:

p (n,x) = p ( 3, -2) = ?

Solution:

p (n,x) = n + 2x^{2}

Substituting n = 3 and x = -2 we get

p (3, -2) = 3 + 2(-2)^{2}

Negative square gives positive number therefore (-2)²=4

p (3, -2) = 3 + 2\times 4

p (3, -2) = 3 + 8\\p (3, -2) = 11

When n=3 and x=−2  the answer is 11.

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