The answer is B. I used the trigonometric sine formula



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Answer:
53. ±6
51. 2
Step-by-step explanation:
According to the Order of Operations [GEMS\BOMDAS\PEMDAS etc.], in this case, evaluate everything in grouping symbols first, then evaluate the exponents to avoid confusion:

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B. 54
Because 54+13=67
67+54=121
Answer:
A
Step-by-step explanation: