IDNLearn.com: Your reliable source for finding expert answers. Get accurate answers to your questions from our community of experts who are always ready to provide timely and relevant solutions.
Sagot :
Answer:
A. I
Step-by-step explanation:
sin is defined as y and cos is defined as x.
That means only QI can have sin > 0 and cos > 0
QII has sin > 0 but cos < 0 because cos = x and x is in negative side.
QIII has both sin and cos < 0 because sin and cos are in negative side.
QIV has sin < 0 but cos > 0 because cos is in positive x.
Therefore, sin > 0 and cos > 0 at same time in QI
Thank you for using this platform to share and learn. Keep asking and answering. We appreciate every contribution you make. IDNLearn.com has the solutions you’re looking for. Thanks for visiting, and see you next time for more reliable information.