Use the Reciprocal and Quotient Identities:
Use the Reciprocal and Quotient Identities.
Use the Pythagorean Theorem Identities.
Which Quadrant the x lies?
Use the Pythagorean Theorem Identities.
Which Quadrant angle lies:
Use the cofunction and even-odd identities
Use the cofunction and even-odd identities
Simplify the trigonometric expression.
Simplify the trigonometric expression
Simplify the trigonometric expression