Question 21 Given the following four vertices, which one must be on the unit circle regardless the value of theta? (1,1) (cose, cose) (sine, - cose) (sine, - sine) Question 22 How many times the render function will be called in one second by following code? just fill in a number, such as 10. setinterval(render, 20); Question 23 Function requestAnim Frame is supported by most browsers. True False Question 24 Which of the following are pointing devices? Keyboard Touch Pad Light Pen Mouse Question 25 1 points Because WebGL is concerned with rendering and not input, we use JavaScript and HTML for the interactive part of our application. True False