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veneciasp 2022-07-06 Answered
Explain this equality: 90 + tan 1 X C R = tan 1 R X C
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Answers (1)

Franco Cohen
Answered 2022-07-07 Author has 8 answers
Let     arctan 1 x = θ
1 x = tan θ
x = cot θ = tan ( π 2 θ )
arctan x = π 2 θ
arctan x = π 2 θ
So,
arctan x = π 2 arctan 1 x
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