19 lines
470 B
Plaintext
19 lines
470 B
Plaintext
iex(61)> deg = 45
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45
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iex(62)> rad = :math.pi / 4
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0.7853981633974483
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iex(63)> :math.sin(deg * :math.pi / 180) == :math.sin(rad)
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true
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iex(64)> :math.cos(deg * :math.pi / 180) == :math.cos(rad)
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true
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iex(65)> :math.tan(deg * :math.pi / 180) == :math.tan(rad)
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true
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iex(66)> temp = :math.acos(:math.cos(rad))
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0.7853981633974483
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iex(67)> temp * 180 / :math.pi == deg
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true
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iex(68)> temp = :math.atan(:math.tan(rad))
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0.7853981633974483
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iex(69)> temp * 180 / :math.pi == deg
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true
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