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1,State wether each of the following functional values are negative or posetive
A, cos(-220°)
Bot
answered
positive
Step-by-Step Bot
answered
To determine whether the functional value of cos(-220°) is positive or negative, we need to recall the unit circle and the properties of cosine function.
In the unit circle, -220° lies in the third quadrant, where cosine values are negative. Therefore, the functional value of cos(-220°) is negative.