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What is the value of cos^(-1)(-1)?
What is the value of cos^(-1)(-1)?
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Practice Questions
1 question
Q1
What is the value of cos^(-1)(-1)?
0
π
π/2
2π
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cos^(-1)(-1) = π, since cos(π) = -1.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the value of cos^(-1)(-1)?
Solution:
cos^(-1)(-1) = π, since cos(π) = -1.
Steps: 4
Show Steps
Step 1: Understand what cos^(-1)(-1) means. It is asking for the angle whose cosine value is -1.
Step 2: Recall the unit circle, which helps us understand the values of cosine for different angles.
Step 3: Identify the angle where the cosine value is -1. This occurs at π radians (or 180 degrees).
Step 4: Conclude that cos^(-1)(-1) = π because cos(π) = -1.
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