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Simplify $\frac{1}{\cos\left(x\right)}$ into $\sec\left(x\right)$ by applying trigonometric identities
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$\int\sec\left(x\right)dx$
Learn how to solve trigonometric integrals problems step by step online. Solve the trigonometric integral int(1/cos(x))dx. Simplify \frac{1}{\cos\left(x\right)} into \sec\left(x\right) by applying trigonometric identities. The integral of the secant function is given by the following formula, \displaystyle\int\sec(x)dx=\ln\left|\sec(x)+\tan(x)\right|. As the integral that we are solving is an indefinite integral, when we finish integrating we must add the constant of integration C.