Answer:
A
Step-by-step explanation:
Using the co function identity
sin x = cos(90 - x) = cos(90 - 30) = cos60° ← x = 30°, thus
sin30° = cos60°
B is the answer if it is x + 9=20
Answer:
Step-by-step explanation:

The answer would be 1/15.
Find the greatest common multiple of each fraction, then add them. You will get 1/15 out of it.
Answer:
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