Trigonometry (11th Edition) Clone

Step 1: Using the reciprocal identity $\sec\theta=\frac{1}{\cos\theta}$, $\sec 58.9041=\frac{1}{\cos 58.9041}$ Step 2: We first make sure that the calculator is in degree mode. Step 3: We then type $\frac{1}{\cos 58.9041}$ into the calculator. Step 4: Solving, $\frac{1}{\cos 58.9041}\approx1.9362132$.