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fomenos
3 years ago
10

Which expression is equivalent to cos120°?

Mathematics
2 answers:
denis23 [38]3 years ago
6 0

Answer:

-(\frac{1}{2})

Step-by-step explanation:

The given expression is:

cos120^{\circ}

This expression can be rewritten as:

=cos(180-60)^{\circ}

=-cos60^{\circ}

=-(\frac{1}{2}) (Because the value of cos60^{\circ} is \frac{1}{2})

which is the required simplified expression.

anastassius [24]3 years ago
3 0
The number or expression is -0.5
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