October 2018 1 154 Report
Jika cotan 54° = 1/x, maka cosec 9° =…
a. x - 1 / x + 1
b. x + 1 / x - 1
c. √2(x^2 + 1) / x - 1
d. √2(x^2 + 1) / x + 1
e. x - 1 / √2(x^2 + 1)

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