Question: Suppose that cos = 1/3. (a) Show that if 0 < /2, then sin = 2 2/3 and tan = 22.

Suppose that cos θ = 1/3.

(a) Show that if 0 ≤ θ < π/2, then sin θ = 2 √2/3 and tanθ = 2√2.
(b) Find sin θ and tan θ if 3π/2 ≤ θ < 2π.

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