Find the value of cos 1220 degree class 11
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Cos 120
The value of Cos 120⁰ is - ½. It is the additive inverse of the value of cosine 60⁰ or cos 60⁰. Cosine is one of the basic trigonometric functions. It is expressed as a ratio of the base of a right-angled triangle to its hypotenuse.
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