Use a Calculator to Find the Function Value $\mathrm { F }$

question 265

Multiple Choice

Use a calculator to find the function value. Give your answer rounded to seven decimal places, if necessary.
-The grade resistance $\mathrm { F }$ of a car traveling up or down a hill is modeled by the equation $\mathrm { F } = \mathrm { W } \sin \theta$ , where $W$ is the weight of the car and $\theta$ is the angle of the hill's grade $( \theta > 0$ for uphill travel, $\theta < 0$ for downhill travel) . A 2025-lb car has just rolled off a sheer vertical cliff $\left( \theta = - 90 ^ { \circ } \right)$ . What is the car's grade resistance?

• A) \(0 \mathrm { lb }\)
• B) undefined
• C) \(2025 \mathrm { lb }\)
• D) \(- 2025 \mathrm { lb }\)

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