If the point (3/5,4/5) corresponds to an angle theta in the unit circle, what is csc ?

1 answer:

7 0

We have a triangle:
the side opposite the angle Ф is 4/5,
The side adjacent the angle Ф is 3/5

1) we calculate the hypotenuse, by the Pythagoras Theorem:
h=√[(4/5)²+(3/5)²]=1

2) we calculate the csc of Ф
csc Ф= hypotenuse / opposite side

csc Ф=1/ (4/5)=5/4

Answer: e. 5/4

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