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A 3 I guess or a B. idk....
Answer:
Given - Two angles measures 2x and 3x
To find - size of 3x
Solution -
2x + 3x = 360° ( Make reflex angle )
5x = 360°
x = 360/5
x = 72°
3x = 3 * 72 = 216°
Answer:

Step-by-step explanation:


is the only acute angle whose sin = 1/2. Therefore, cos (

) =