Given the equation
$$h \sin{\left(t - 1 \right)} = 0$$
- this is the simplest trigonometric equation
with the change of sign in 0
We get:
$$h \sin{\left(t - 1 \right)} = 0$$
Divide both parts of the equation by h
The equation is transformed to
$$\sin{\left(t - 1 \right)} = 0$$
This equation is transformed to
$$t - 1 = 2 \pi n + \operatorname{asin}{\left(0 \right)}$$
$$t - 1 = 2 \pi n - \operatorname{asin}{\left(0 \right)} + \pi$$
Or
$$t - 1 = 2 \pi n$$
$$t - 1 = 2 \pi n + \pi$$
, where n - is a integer
Move
$$-1$$
to right part of the equation
with the opposite sign, in total:
$$t = 2 \pi n + 1$$
$$t = 2 \pi n + 1 + \pi$$