To divide fractions, you flip the denominator and then multiply it by the numerator.
-6 / 5 x (-25 / 3)
Multiply straight across; the negative cancels out.
150 / 15
This can be reduced to 15, which is its simplest form.
Answer: 20 minutes
Step-by-step explanation:
An hour is 60 minutes, so (1/3)(60 min) = 20 min.
Take the cos-1 of both sides to get 3x=30 then divide by 3 to get ×=10
