How do you evaluate #arctan(2)#?

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Nghi N. Share
Feb 6, 2017

Answer:

#x = 63^@43 + k180^@#

Explanation:

Use calculator and unit circle
tan x = 2 --> calculator --> arc #x = 63^@43#
Unit circle gives another arc x that has the same tan value:
#x = 63^@43 + 180^@ = 243^@43#
Answers for (0, 360):
#63^@43, 243^@43#
General answers:
#x = 63^@43 + k180^@#

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