Evaluate. sin 0 + cos 72

Find sin(0): We need to find the value of sin(0) degrees. The sine of 0 degrees is a known value. Calculation: sin(0) = 0Find cos(72): Now we need to find the value of cos(72) degrees. The cosine of 72 degrees is not a commonly memorized value, but it can be found using a calculator or trigonometric tables. Calculation: cos(72) ≈ 0.309Add values: We add the values of sin(0) and cos(72) to find the final answer. Calculation: 0 + 0.309 = 0.309

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Evaluate. $\newline$ $\sin 0 + \cos 72$

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Q. Evaluate.

\newline

\sin 0 + \cos 72

Find $\sin(0)$ : We need to find the value of $\sin(0)$ degrees. The sine of $0$ degrees is a known value. $\newline$ Calculation: $\sin(0) = 0$
Find $\cos(72)$ : Now we need to find the value of $\cos(72)$ degrees. The cosine of $72$ degrees is not a commonly memorized value, but it can be found using a calculator or trigonometric tables. $\newline$ Calculation: $\cos(72) \approx 0.309$
Add values: We add the values of $\sin(0)$ and $\cos(72)$ to find the final answer. $\newline$ Calculation: $0 + 0.309 = 0.309$