Give the exact value of the expression without using a calculator. 15 12 cos tan tan 8. 5 ... 15 cos tan - tan 8 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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A: we have the complex number as13ei

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A: topic- slope of the curve

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A: Please refer to the image below

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A: Here we have to find the length of the side a =? 

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