Factorise the following questions
1 answer:
You might be interested in
Umm, I don't feel like typing (too lazy and tired to do that lol) so I will attach a written file.
BTW-
Radius is HALF the Diameter.
Diameter is that straight line that goes across the center of the circle.
Radius is basically a line from the center of the circle to any of the side of the circle.
Circumference is basically the perimeter of the circle, or the border or it. It is the Diameter times pi (it said to use 3.14 for pi). It can also be 2 times the Radius times pi (3.14) (since Radius is half the Diameter).
Area is the region inside the circle. Area is the Radius squared (to the power of 2, whatever) times pi (simplified as 3.14).
Okie, now the answers.
^^^Too lazy to put the unit lol.
cosx = +1/2 => x = +π/3 + 2kπ, where k is an integer or x = -π/3 + 2kπ, where k is an integer;
cosx = -1/2 => x = +2π/3 + 2kπ, where k is an integer or x = -2π/3 + 2kπ, where k is an integer;