Hệ phương trình 1/x + 1/y = 5/24 4/x + 3/y = 3/4
1 answer:
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Answer:
Step-by-step explanation:
The diagram is given to you below. I could not change <C so that it was theta. So C = theta.
So C is the reference angle. Call it theta when you think of it. The diagram shows you how cos(C) must be set up.
The adjacent side is 7
The hypotenuse is 18
theta = C = cos-1(7/18) = 67.11
To the nearest degree 67.11 = 67
Answer:
Step-by-step explanation:
the answer is A