Answer:
4
Step-by-step explanation:
<h3>
Answer: B) 60</h3>
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Explanation:
Whenever the angle theta is between 0 and 90, the reference angle is exactly that value.
It's only when you get to other quadrants is when things get a bit tricky. Right now we're in quadrant 1, often written as Q1.
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Extra info:
- If theta is between 90 and 180, then the reference angle is 180-theta. This region is Q2
- If theta is in quadrant 3, between 180 and 270, then the reference angle is theta-180. The order of subtraction is important since x-y is the not the same as y-x.
- Lastly, if theta is between 270 and 360 (in Q4), then the reference angle is 360-theta.
- As you can see, we have four quadrants starting with Q1 in the upper right corner. Then we move counterclockwise to get Q2,Q3 and Q4.
Write an Expression:
4.25*9 = X
4.25*9 = 38.25 in²
Answer: Option B (2x=28°, x=14°)
Step-by-step explanation: 2x+44° = 72°
<u><em>Let the point of intersection be O</em></u>
∠O = 180° - (28°+44°)
180°-72° = 108°
∴ As we know that 2x+44=72°
2x= 72-44
2x=28°
∴x=28/2 = 14°
Therefore the correct answer is Option B (2x=28°, x=14°)
