Chapter 12 Trigonometry Triangle

# The angles could be nega5ve or posi5ve their terminal

This preview shows page 1. Sign up to view the full content.

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

Unformatted text preview: d IV Sample Problems •  Sketch a posi5ve angle in quad II Sample Problem •  Sketch a nega5ve angle in quad III Sketch the given angle in standard posi5on, showing its rota5on. Iden5fy the quadrant in which the terminal ray is found. 1) 2100 2) − 1850 Coterminal Angles •  Coterminal angles are angles that diﬀer from the given angle by 360 degrees. •  The angles could be nega5ve or posi5ve. •  Their terminal sides coincide To ﬁnd Coterminal Angles … •  If you are looking for a posi5ve coterminal angle, add 360 degrees to the origional angle measure, theta. •  If you are looking for a nega5ve coterminal angle, subtract 360 degrees from the original angle measure, theta. For example ... 3) θ = 73 0 . θ Find a nega5ve coterminal angle of . 0 0 0 60 − 360 = −300 θ Find a posi5ve coterminal angle of 0 0 0 73 + 360 = 433 4) θ = 60 0 Iden5fy 2 angles (1 posi5ve and 1 nega5ve) that are coterminal with the given angle 5) 50 0 0 6) 120 7) − 45 0 1 1 = min utes 60 1 of 1' = 1' ' 60 0 (1' = 1 min ute ) (1' ' = 1sec ond ) 8) Express in decimal degrees 0 a) 14 36' 54" = 0 b) 64 9' = 0 c) 7 24' 18" = 9) Express in degrees, minutes and seconds: 0 a) 53.721 = b) 5.450 = c) 59.72 0 = CW/HW: p552...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online