Question: Express the following angles in radians: (a) 30o. (b) 57o, (c) 90o, (d) 360o, (e) 420o. Give as numerical values and as fractions of .

Express the following angles in radians:
(a) 30o.
(b) 57o,
(c) 90o,
(d) 360o,
(e) 420o.
Give as numerical values and as fractions of π.

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