M141-Chapt3-5 - (a) sin 22.5 (b) cos 5 12 1 If tan , , find...

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Section 3.5 Double-angle and Half-angle Formulas
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( 29 ( 29 2 3 If cos , , find the exact value of: 5 2 (a) sin 2 (b) cos 2 π θ = - < <
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Use a Half-angle Formula to find the exact value of:
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Unformatted text preview: (a) sin 22.5 (b) cos 5 12 1 If tan , , find the exact value of: 5 2 (a) sin (b) cos (c) tan 2 2 2 = -&lt; &lt;...
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M141-Chapt3-5 - (a) sin 22.5 (b) cos 5 12 1 If tan , , find...

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