1. Express in terms of cos only the expression 2. Express in terms of sin only the...
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1. Express in terms of cosθ only the expression
2. Express in terms of sinθ only the expression
3. If x = tan π/8, use formula (6.5c) to show that 2x = 1 − x2. Thus, determine tan π/8.
4. Solve the following equations for values of θ in the interval 0 ≤ θ
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