Question: Find the exact value of the following expression without using a calculator. tan [ sin 1 ( 1 2 ) + cos 1 ( 5

Find the exact value of the following expression without using a calculator.

tan[sin1(12)+cos1(56)]=tan[sin1(12)+cos1(56)]=

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Note: Enter an exact simplified answer with no decimals. Use pi for if necessary.
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