Question

Choose the three true statements from the following.
Options
A) The period of y =cosx is 90◦.
B) The period of y =sinx is ð radians.
C) The period of y =sin(2x) is four times the period of y =sinx.
D) The period of y =sin(2x) is half of the period of y =sinx.
E) The graph of y =sinx only cuts the x-axis only once.
F) The graph of y =cosx cuts the y-axis at y = −1.
G) sin(30◦) = sin(150◦)
H) cos(30◦)=cos(−30◦)

Answer 1

D G H

Answer 2

thanks