Question 11, 1.3.63 Ww Soons 4a, c234, 0.24 of 19 poits 1.3 Pontrs of 1 Find the indicated function value. If it is undefined, say so. \( \cos \left(0^{\circ}\right) \) Seled the correct choice below and, If necessary, fill in the answer box to complete your choice. A. \( \cos \left(0^{\circ}\right)= \) \( \square \) (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) B. The function is undefined.

The first additional information is that the cosine function, denoted as \( \cos \), describes the x-coordinate of a point on the unit circle at a given angle. At \( 0^{\circ} \), the corresponding point on the unit circle is (1, 0). Therefore, \( \cos \left(0^{\circ}\right) = 1\). For a bit of fun with trigonometry, did you know that the cosine of an angle can be calculated using the Taylor series expansion? For angles close to zero, this series converges quickly, and you might just impress your friends with how you can calculate values like \( \cos \left(0^{\circ}\right) \) without even a calculator! Isn’t math magical?