Find the exact value of arccos (sin (pi/6). Explain your reasoning.
1 answer:
We have to find the exact value of: arc cos ( sin ( π /6 ) ). We know that: sin ( π/6 ) = sin 30° = 1/2 Arc cos is the inverse function of cosine. arc cos ( 1/2 ) = 60° = π/3
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number 1. answer is 5
number 2. answer is 2 1/2
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