I'm looking at the solution manual of an exercise i've been doing. The last step to find t after 2cos400t = sin400t is to divide sin by cos and get the tan.
tan 400t = 2
But i'm unable to process the next step. It's been a while i haven't practiced my trigonometry and I'm a bit rusty and been struggling with this for a while.
The next step is
400t = 1.1
how? Tan-1 gives 63.43
+26400 Do arctan(2) in rad - modus. You get $$1.10714871779\ rad$$
Do arctan(2) in degree - modus. You get $$63.4349488229\ensurement{^{\circ}}$$
$$\\ 63.4349488229\ensurement{^{\circ}} \cdot \frac{\pi}{180} = 1.10714871779\ rad \\\\
1.10714871779\ rad \cdot \frac{180}{\pi} =63.4349488229\ensurement{^{\circ}} \\$$
