Select all that have a value of 0.
-cos pi/2
-cos 0
-sin 0
-sin 3pi/2
-tan pi

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)