1 / 5

Secants and Tangents

Secants and Tangents. With Diameters and Central Angles. Diameter and Secant Angles. Diameter cuts the circle in half (180 °) Arc DEB is 180 °. If DE is 60, Then EB is 180 – 60 = 120°. DE = 60 °. 120°. EB = ___. Secant Angle = ½ (120 – 60). ½ (60) = 30 °. B. C. A=___. 30°. D.

huela
Télécharger la présentation

Secants and Tangents

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Secants and Tangents With Diameters and Central Angles

  2. Diameter and Secant Angles • Diameter cuts the circle in half (180°) • Arc DEB is 180°. If DE is 60, Then EB is 180 – 60 = 120° DE = 60° 120° EB = ___ • Secant Angle = ½ (120 – 60) ½ (60) = 30° B C A=___ 30° D 120° 60° A E

  3. Central Angles and Two Tangents QR = 100° • Angle QOR is a central angle. • Arc QSR is a major arc. • Arc QRS = 360 – 100 = 260° Q P O S 260° QSR = ____ P = ____ R

  4. Central Angles and Two Tangents • Angle P is made out of two tangents. • Tangent Angle = ½ (260 – 100) • Angle P = ½ (260 – 100) = • ½ (160 ) = 80° Q P 260° 100° O S 260° QSR = ____ P = ____ R 80°

  5. Practice Problems: In your notebooks… Arc QR = 116° Q P 116° O S QSR = ____ P = ____ R

More Related