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1.
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Use the figure to find the exact value of the
trigonometric function.
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2.
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Use a double-angle formula to rewrite the
expression.
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3.
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Use a double-angle formula to rewrite the
expression.
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4.
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Use the half-angle formulas to simplify the
expression.
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5.
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Use the product-to-sum formulas to select the
product as a sum or difference.
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6.
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Use the product-to-sum formulas to select the
product as a sum or difference.
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7.
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Use the figure to find the exact value of the
trigonometric function.
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8.
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Evaluate the expression.
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9.
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Use the figure below to find the exact value of the
given trigonometric expression.
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10.
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Use the half-angle formula to simplify the given
expression.
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