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If cos ⁡x=−4/5, and 180°
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If cos ⁡x=−4/5, and 180°

User Blnpwr
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Answer:

Explanation:

If cos x = -4/5, and 180°%3Cx%3C270° is in quadrant 3, what is tan (x/2)?

User Stefano Giacone
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