Test 4 Solutions

# Test 4 Solutions - Test 4 Name: ______________________ Math...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Test 4 Name: ______________________ Math 115-007 November 19, 2009 1. (18 points) Given sin() = 4 1 (with in Quadrant I), find the following using the appropriate double-angle or half-angle formula: cos( ) = 4 15 cos( 2 ) = 8 7 sin( 2 ) = 4 1 4 15 2 sin( 2 ) = 2 4 15 1- cos( 2 ) = 2 4 15 1 + tan( 2 ) = 4 15 1 4 15 1 +- 2. (3 points each) Find the following trigonometric values using half-angle or sum- and difference-identities. a. sin( 8 ) = 2 2 2 1 2 4 cos 1- = - b. tan( 12 7 ) = - + -- = + - 2 3 1 2 3 1 6 7 cos 1 6 7 cos 1 c. cos( o 175 ) = ) 45 sin( ) 120 sin( ) 45 cos( ) 120 cos( ) 45 120 cos( o o o o o o- = + 2 2 2 1 2 2 2 3-- = d. tan( o 15 ) = ) 45 tan( ) 60 tan( 1 ) 45 tan( ) 60 tan( ) 45 60 tan( o o o o o o +- =- ( 29 ( 29 1 3 1 1 3 +- = Test 4 Name: ______________________...
View Full Document

## This note was uploaded on 03/04/2012 for the course MATH 115 taught by Professor Ms.park during the Fall '09 term at South Carolina.

### Page1 / 5

Test 4 Solutions - Test 4 Name: ______________________ Math...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online