Given:


To find:
The
.
Solution:
Conditional probability:

Substituting the given values, we get



Therefore, the correct option is B.
Answer:
1/4?
Step-by-step explanation:
Answer:
the answer is C I think
Step-by-step explanation:
the answer is C I think
ANSWER
The correct choice is A.
EXPLANATION
The given cosine function is:

This function has an amplitude of 2.
Hence it must have range,
-2≤f(t)≤2
It has a period of

Hence the function must complete one cycle on the interval,
[0,½π],
[½π,π],
etc.
The negative sign shows a reflection in the y-axis but since the cosine function is even, the function retraces itself.
The correct choice is A