Due to the complexity of the Pythagorean Identity, we will our efforts on the “TRIANGLE METHOD” instead. See Exercise #1 below: If sin = , and angle is in find the exact value of cos Use the #1: Quadrant I, Exercise x x x. “Triangle Method” to solve. Remember to check the sign of the trig function using the A-S-T-C trick! #2: An , has a terminal ray that falls in the second quadrant. If it is known that Exercise , determine the value of . Remember to check the sign of the trig function using the A-S-T-C trick! An angle, , has a terminal ray that falls in the and . Determine the value of #3: fourth quadrant Exercise in simplest radical form. Remember to check the sign of the trig function using the A-S-T-C trick!
Due to the complexity of the Pythagorean Identity, we will our efforts on the “TRIANGLE METHOD” instead. See Exercise #1 below: Exercise #1: If sin x = , and angle x is in Quadrant I, find the exact value of cos x. Use the “Triangle Method” to solve. Remember to check the sign of the trig function using the A-S-T-C trick! Exercise #2: An , has a terminal ray that falls in the second quadrant. If it is known that , determine the value of . Remember to check the sign of the trig function using the A-S-T-C trick! Exercise #3: An angle, , has a terminal ray that falls in the fourth quadrant and . Determine the value of in simplest radical form. Remember to check the sign of the trig function using the A-S-T-C trick!
Millonzi%20Unit%2011%20Trig%20Notes%202018.docx