One of the fundamentals of painting and photography, the Rule of Thirds is a technique designed to help artists and photographers build drama and interest in a piece. The rule states that a piece should be divided into nine squares of equal size, with two horizontal lines intersecting two vertical lines.
Answer:
a.the number of cycles per second
Explanation:
The frequency of a sine wave is defined as the number of cycles per second.
Frequency is the inverse of the time period. The frequency of a sine wave is given by 1/TimePeriod . It is generally expressed in units of Hertz(Hz) or sec^-1. Larger the time period, lower will be the frequency and vice versa. So for higher frequency waves we need to ensure that the time period is small.
Look in for setting under system settings, that should show what software and firmware version you are on.