This preview shows pages 1–5. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: ) positive or negative? (c) Use a fundamental identity to Fnd the exact value of sec( ). (d) Use a fundamental identity to Fnd the exact value of cos( ). (e) Use a fundamental identity to Fnd the exact value of sin( ). (f) Use a fundamental identity to Fnd the exact value of cos( ). 5. Let be an angle such that 180 < < 270 and cos( ) =. 64. (a) Which quadrant does / 2 lie in? (b) Find the exact value of cos( / 2). (c) Find the exact value of sin( / 2). 6. Verify that cos( ) csc( )sin( ) = tan( ) . 7. Verify that sin(3 x ) sin( x ) = 4 cos 2 ( x )1 . Hint: To get started, write 3 x = 2 x + x ....
View Full
Document
 Fall '08
 KWON

Click to edit the document details