Question
Solve the given problems. Use a calculator to solve if necessary.The angle $\theta$ (in degrees) of a robot arm with the horizontal as a function of time $t$ (in $\mathrm{s}$ ) is given by $\theta=15+20 t^{2}-4 t^{3}$ for $0 \leq t \leq 5$ s. Find $t$ for $\theta=40^{\circ}$.
Step 1
This gives us the equation: \[40 = 15 + 20t^2 - 4t^3\] Show more…
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