SOLUTION: Ex 1 Find the value of sin^-1 (1/2). Express your answer in degrees. Ex 2 Find the exact value, in radians, without using a caculator, of cos^-1 (-1/2).

Algebra ->  Trigonometry-basics -> SOLUTION: Ex 1 Find the value of sin^-1 (1/2). Express your answer in degrees. Ex 2 Find the exact value, in radians, without using a caculator, of cos^-1 (-1/2).      Log On


   

Question 606344: Ex 1
Find the value of sin^-1 (1/2). Express your answer in degrees.
Ex 2
Find the exact value, in radians, without using a caculator, of cos^-1 (-1/2).
Answer by lwsshak3(11628) About Me  (Show Source):
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Ex 1
Find the value of sin^-1 (1/2). Express your answer in degrees.
sin^-1 (1/2)=30º
Ex 2
Find the exact value, in radians, without using a caculator, of cos^-1 (-1/2)
cos^-1 (-1/2)=2π/3 (reference angle in quadrant II where cos<0)