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# please solve. Write the expression as a function of 0, with no...

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Use a sum or difference identity to find the exact value of the expression. tan 75&quot; tan 75' = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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Use a sum or difference formula to find the exact value of the trigonometric function. 11x sin 12 11x sin 12 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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Use a sum or difference identity to find the exact value of the expression. tan 12 tan = 12 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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Use a sum or difference identity to find the exact value of the expression. tan 12 tan = 12 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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Find the exact value of the expression by using appropriate identities. Do not use a calculator. sin 81 cos 21&quot; - cos 81 sin 210 sin 81&quot; cos 21&quot; - cos 81 sin 21&quot; = (Type a fraction.)

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Find the exact value of the expression sin + cos 12 COS 4 12 sin 4 3x sin COS 4 + COS 12 sin 4 = 12 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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Find the exact value of the expression by using appropriate identities. Do not use a calculator. tan 83&quot; + tan 970 1 - tan 83 tan 97 tan 83 + tan 970 = 1 - tan 83 tan 97&quot;

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Write the expression as a function of 0, with no angle measure involved. cos (1209 -0) cos (1209 - 0) = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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