find the value of cos 210 degree
nandani9174:
cos 210° = cos (180° + 30°) = -cos 30°. =-√3/2
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38
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Step-by-step explanation:
BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST
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Step-by-step explanation:
-√3/2
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