Question

question
evaluate the expression below, expressing your answer in radians.
\arccos(1) - 3\pi
answer attempt 1 out of 3
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Explanation:

Step1: Recall arccos(1) value

The range of \( y = \arccos(x) \) is \( [0, \pi] \). We know that \( \cos(0)=1 \), so \( \arccos(1) = 0 \).

Step2: Substitute and simplify

Substitute \( \arccos(1)=0 \) into the expression \( \arccos(1)-3\pi \). We get \( 0 - 3\pi=- 3\pi \).

Answer:

\(-3\pi\)