Evaluate the expression. Give an exact answer either in degrees or radians.
Evaluate the expression. Give an exact answer either in degrees or radians.
a. cos^-1(-sqrt(2)/2)
b. sin^-1(-sqrt(3)/2)
c. tan^-1(-1)
Evaluate the expression. Give an exact answer either in degrees or radians.
a. cos^-1(-sqrt(2)/2)
b. sin^-1(-sqrt(3)/2)
c. tan^-1(-1)
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