# How solve this equation where 0.8=0.2 cos (31.4 t) where 31.4 is the unit in radian per second and we want to find t (time)value, the answer is t=0.037 seconds, how to solve it algebraically?

##### 1 Answer

Aug 15, 2015

Hi Shafiyah, you cannot really solve this equation because your function goes only from

#### Explanation:

If you have

If it is: