Let t = theta for short (1) If cot(t) = -2, find cot(t + pi) (2) If cos(t) = 2/3, find sec(t)
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Hello, I think that... cot(t)=1/tan(t), tan(t+pi)=tan t, sec(t)=1/cos(t). Bye.
Originally Posted by magentarita Let t = theta for short (1) If cot(t) = -2, find cot(t + pi) (2) If cos(t) = 2/3, find sec(t) Use the following rules: $\displaystyle \cot \left(\theta + \pi\right) = \cot \theta$ $\displaystyle \sec \theta = \frac{1}{\cos \theta}$
Thanks Air.
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