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MAVERICK [17]
3 years ago
14

Use the unit circle to find the value of tan (-180°).

Mathematics
1 answer:
loris [4]3 years ago
8 0

In order to evaluate the tangent function "visually", you have to draw a vertical line tangent to the circle (i.e. the line x=1), and extend the radius until it meets that line.

Since the angle -180° makes you land on point (-1,0), if you extend the radius you'll meet the vertical line at point (1,0).

The tangent is the y-value of this point, and thus it's zero.

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Several intervals can be combined into one region using the "set union" operation, ∪∪, which is represented as "u" in webwork. f
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Write the set of points from  -6 to 0 but excluding  -4  and 0 as a union of intervals

First we take  the interval  -6 to 0. In that -4  and 0 are excluded.

So we split the interval -6 to 0.

Start with -6 and go up to -4. -4 is excluded so we break at -4. Also we use parenthesis for -4.

Interval becomes [-6,-4) . It says -6 included but -4 excluded.

Next interval starts at -4 and ends at 0. -4 and 0 are excluded so we use parenthesis not square brackets

(-4,0)

Now we take union of both intervals

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7 0
3 years ago
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Papessa [141]

Answer:

a = -10

Step-by-step explanation:

-0.4a + 3 = 7

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a = - 10

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3 years ago
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3 years ago
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alexandr1967 [171]

Answer:

Step-by-step explanation:

The two triangles are congruent.

∠L ≅ ∠ B            Given

LN ≅ BZ              Given

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2 years ago
The equation of line GH is Y=4x-3. What's the equation of a line GH in slope-intercept form contains point (2-3)
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