Answer:
Step-by-step explanation:
Answer:
500 g = 0.5 kg
Step-by-step explanation:
1 kg = 1000 g
500 g = 0.5 kg
ANSWER

EXPLANATION
The given trigonometric equation is

We factor cos(x) to get:

Apply the zero product property to obtain:


Using the unit circle,

when

and

We know

when

The sine function is negative in the third and fourth quadrants.


Hence the solutions are:
