Given circle of radius r a radian is the measure of a central angle subtended by an arc length s equal to r The radian measure of an arbitrary angle There are radians in a angle Why ID: 378791
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Slide1
Measuring Angles – Radian Measure
Given circle of radius r, a radian is the measure of a central angle subtended by an arc length s equal to r. The radian measure of an arbitrary angleThere are radians in a angle. Why? Slide2
Using Radian Measure
Degree 2 Radian conversions:Measuring angles as fractions ofCommon anglesFinding arc lengths and sector areas
using proportions! Slide3
SOH-CAH-TOA
Let be an acute angle in right triangle Slide4
Two Famous Triangles
isosceles 45-45-90equilateral 30-60-90Slide5
Know how to do the following
Using the famous triangles derive the 6 trig functions forGiven any two sides of a right triangle find the values of all six trig. functions Given a side and an angle solve the right triangle (i.e. determine the missing lengths)Given the value of one trig. function, determine the values of the other fiveSlide6
Some Miscellaneous Stuff
Angular velocity in radians per unit time Alternate area formula for a triangle Complementary angles &
co-functions