Assertion : Sine and cosine function are periodic function
Reason: sinusoidal function repeat its value after a definite interval of time

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false

Answer

A

Explanation

A periodic function is one whose value repeats after a definite interval of time. `sintheta and cos theta` are periodic functions because they repeate itself after `2pi` interval of time.