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A2M2L7SB Secant and CoFunctions.notebook December 10, 2015 Secant and CoFunctions Do Now: standard: F.TF.2 State the quadrants where a) sin >0 b) sin < 0 c) cos >0 d) cos < 0 d) tan > 0 e) tan < 0 Determine the exact value of the following: cos tan Determine the exact value of the following: cos tan A2M2L7SB Secant and CoFunctions.notebook Express the length of each segment in terms of the value of a trig. function. OQ= PQ= RS= December 10, 2015 A2M2L7SB Secant and CoFunctions.notebook December 10, 2015 Recall that a secant is a line that intersects a circle at two points. OR = sec Use proportions in similar triangles to find the value of in terms of one other trig. function. What is the domain of the secant function? A2M2L7SB Secant and CoFunctions.notebook December 10, 2015 Definitions of 2 more functions: cosecant: cotangent: What is the domain of the csc function? What is the domain of the cot function? A2M2L7SB Secant and CoFunctions.notebook Determine the values of each of the following: If and are complimentary then sin = cos and cos = sin Sine and cosine are called cofunctions. December 10, 2015 A2M2L7SB Secant and CoFunctions.notebook Pairs of cofunctions: sine and cosine secant and cosecant tangent and cotangent Determine the value of December 10, 2015 A2M2L7SB Secant and CoFunctions.notebook December 10, 2015 Summarization of Trigonometric Functions Let be any real number. In the Cartesian plane, rotate the initial ray by degrees about the origin. Intersect the resulting terminal ray with the unit circle to get a point Function Value Domain Formula Sine Cosine Tangent Secant Cosecant Cotangent Homework: Worksheet Quiz tomorrow A2M2L7SB Secant and CoFunctions.notebook December 10, 2015