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26 April 2011

26 April 2011. Precalculus. Simplify: sin q cos q sec q cot q. sin q cos q tan q sec q csc q. 300. 0 of 30. Agenda. Last trig identity Circle Intro Parts of a Circle Central Angle Measure Arc Measure Arc Length. Circle Investigation Day 1 4/26. Parts of a Circle. Diameter.

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26 April 2011

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  1. 26 April 2011 Precalculus

  2. Simplify: sinqcosqsecqcotq • sinq • cosq • tanq • secq • cscq 300 0 of 30

  3. Agenda • Last trig identity • Circle Intro • Parts of a Circle • Central Angle Measure • Arc Measure • Arc Length

  4. Circle Investigation Day 1 4/26 Parts of a Circle Diameter

  5. Circle Investigation Day 1 4/26 Parts of a Circle Radius

  6. Circle Investigation Day 1 4/26 Parts of a Circle Center

  7. Circle Investigation Day 1 4/26 Parts of a Circle Minor Arc

  8. Circle Investigation Day 1 4/26 Parts of a Circle Major Arc

  9. Circle Investigation Day 1 4/26 Parts of a Circle Semicircle

  10. Circle Investigation Day 1 4/26 Parts of a Circle Central Angle

  11. Circle Investigation Day 1 4/26 Parts of a Circle A central angle and its arc will always have the same measure.

  12. Circle Investigation Day 1 4/26 The central angles of a circle always sum to 360o. Central Angle Measure

  13. Circle Investigation Day 1 4/26 <AEB + <BEC + <CED + <DEA = 360o Central Angle Measure

  14. Circle Investigation Day 1 4/26 Sometimes you will be asked to find either arc length, or the central angle measure. Use the following proportion to solve: M = central angle measure L = arc length r = radius Arc Measure

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