Your friend evaluates ( 10-k ) divided by 5 . K stands for 5 and the friend gets 9 as the answer . Explain the error
1 answer:
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Using the unit circle, the coordinates of 3π/4 is :
Note that tangent function can be solved using the formula y/x
where x and y are the coordinates of the angle.
This will be :
The answer is -1
