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3 years ago

PPPPlease help meeee!

Mathematics

2 answers:

lesya692 [45]3 years ago

6 0

Answer:

Step-by-step explanation:

Since the theta is in second quadrant, x will be negative and y positive. cos(theta)=-2/sqrt(29)=B/H, the base is 2 and H=sqrt(29). The perpendicular is 5.

lisov135 [29]3 years ago

3 0

The answer to your question would be choice a (-2,-5)

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Step-by-step explanation:

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3 years ago

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2 years ago

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andreev551 [17]

Answer:

$x=\frac{\pi }{3}+2\pi n, n\in \mathbb{Z}$

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Step-by-step explanation:

$4\text{cos}^2(x)-1=0\\4\text{cos}^2(x)=1\\$

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So, when cos(x) is equal to

$\frac{1}{2} \text{ and } -\frac{1}{2}$ ?

For

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For

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3 years ago

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Oduvanchick [21]

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and to check the answer

x = 30

A=30
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this adds to 180 which is correct because the angles in a triangle add to 180° :)

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Step-by-step explanation:

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