If cos(t) = -sqrt.(21)/5, sin(t) = -2/5 tan(t) = 2sqrt.(21)/21 then what are the values of: cos (2t) sin (t/2) tan (2t)
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Originally Posted by NeedHelp18 If cos(t) = -sqrt.(21)/5, sin(t) = -2/5 tan(t) = 2sqrt.(21)/21 then what are the values of: cos (2t) sin (t/2) tan (2t) note that angle is in quadrant III. use the given values, plug and chug in the following formulas ...
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