mac1147_lecture22_1_c

mac1147_lecture22_1_c - L22 Angles and their Measure; Right...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
253 L22 Angles and their Measure; Right Triangle Trigonometry An angle is formed by rotating a ray around its endpoint. The endpoint is called the vertex . Positive angle – Negative angle –
Background image of page 1

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

View Full DocumentRight Arrow Icon
254 An angle θ is said to be in standard position if its vertex is in the origin and its initial side coincides with the positive x -axis. An angle in standard position is called a quadrantal angle if its terminal side lies on the x -axis or y -axis.
Background image of page 2
255 Measuring the Size of Angles Degrees 1 counterclockwise revolution 360 One degree , 1 ° , is 1 360 revolution Right angle , 90 ° , is 1 4 revolution Straight angle , 180 ° , is 1 2 revolution One minute , 1 , is 1 60 degree. One second , 1 ′′ , is 1 60 minute or 1 3600 degree. Example : 36 45 6 ° .
Background image of page 3

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

View Full DocumentRight Arrow Icon
256 Converting between Degrees, Minutes, and Seconds and Decimal Forms by Hand : Example : Convert 36 45 6 ° ′′ to a decimal in degrees. Example : Convert 25.564 ° to DM S ° form.
Background image of page 4
257 Radians A central angle is a positive angle whose vertex is at the center of a circle.
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 15

mac1147_lecture22_1_c - L22 Angles and their Measure; Right...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online