Theta has a reference angle of 30° and is in Quadrant I or II.
Sin(theta) = ½
Basic angle: 30
<h3>What is the reference angle?</h3>
The acute angle between the terminal arm/terminal side and the x-axis. The reference angle is always positive. In other words, the reference angle is an angle sandwiched between the terminal side and the x-axis.
Angles: 30,
180-30 = 150
Because sin is positive in quadrants 1 and 2.
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<h2>
<u>Answer:</u></h2>
Pi = 3.14
Diameter (d) = 86 cm
•°• Radius (r) = 86 ÷ 2 = 43 cm (radius is 1/2 of diameter)
Area of the circle = ?
Formula,

Substitute the value of 'r' & pi in the formula.

⎆ The area of the circle is about <u>5</u><u>8</u><u>0</u><u>5</u><u>.</u><u>8</u><u>6</u><u> </u>cm² (approx.)
I think it might be experimental probability:)
Answer: 275 +
+20.2 = 296
275 +
- 20. = 255.
Step-by-step explanation:
275 +
+ 20.2 (
= 275 + 0.8 + 20.2
= 275.8 + 20.2 = 296
275 +
- 20.2
= 5 + 0.8 - 20.2 (
= 0.8)
= 275.8 - 20.2 = 255.
I hope this answer your