3 years ago

Explain how to graph a piecewise function

1 answer:

4 0

<span>Just graph the function up to and/or including the points indicated.

- if you have a piecewise function defined as y=x when x < 0
y=-x when x >=1

You would graph y=x from the negative direction up to 0 (but leaving an open circle on 0 because the function is not defined there

Then start at point 1 (this time with a closed circle because y=-x is defined at 1, and graph y=-x.</span>

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If sin(t) = 3/5 and t is in the 2nd quadrant, find cos(t).

NemiM [27]

Cosine is $\frac{hypotenuse}{adjacent}$ .

Apply the equation:

$sin(t) = \frac{3}{5} \\3^2 + b^2 = 5^2\\b^2 = 5^2 - 3^2\\\\\sqrt{b^2} = \sqrt{5^2}- \sqrt{3^2}\\\\\\b = 5 - 3 \\\\b = 2$

B is the adjacent side so

cosine is:

Cos(t) = 5/2

Have a great day,

And I hope this helps you!

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