evaluate cos inverse -1/2
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Answered by
1
Answer:
cos-1(-1/2)
= cos-1{cos(π-π/3)}
= cos-1{cos(2π/3)}
= cos-1{cos(π/3)}
= 2π/3
Answered by
3
cos^-1(-1/2)
= cos^-1(cosπ-π/3)
= cos^-1(cos2π/3)
= 2π/3
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