FIND THE DOMAIN:
h(theta) = 2 sin ( theta + pi/2)
PLEASE SHOW HOW YOU GOT THE DOMAIN WITH SHOWING HOW-TO STEPS WITH TI-84 CALCULATOR OR SHOW MATH WORK WITH HOW-TO STEPS. I NEED TO MEMORIZE HOW TO FIND DOMAIN WHEN IT HAS THETA. I tried doing it on a calculator but the correct answer kept coming up wrong.