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Asked by Esse Adem

Find the of the six trigonometric function of x if cos 2x =4÷5
3 years ago

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Answered by oobleck
cos2x = 4/5

sinx = √((1-cos2x)/2) = √(1/10)
cosx = √((1+cos2x)/2) = √(9/10)
tanx = sinx/cosx = 1/3
and so on
3 years ago
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Find the of the six trigonometric function of x if cos 2x =4÷5

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