The record low temperature recorded in Oklahoma was -31°F. The record low temperature in South Dakota is 27°F lower than -31°F.
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The graph of the given Quadratic equation is attached in the Answer, where we can se that the axis of symmetry is :
- x = 1
Answer:
Step-by-step explanation:
Method 1: Using a calculator <em>instead</em> of the unit circle
The unit circle gives coordinates pairs for the <em>cos</em> and <em>sin</em> values at a certain angle. Therefore, if an angle is given, use a calculator to evaluate the functions at cos(angle) and sin(angle).
Method 2: Using the unit circle
Use the unit circle to locate the angle measure of 150° (or 5π/6 radians) and use the coordinate pair listed by the value (see attachment).
This coordinate pair is (-√3/2, 1/2).