Flashback 9-25-12 Which of the following expressions is the closest approximation to the height h, in feet, of the roof truss shown below? A. 15 tan 20° B. 15 sin 20° C. 30 tan 20° D. 30 sin 20° E.
What is a math teacher's favorite sum? Joke of the day What is a math teacher's favorite sum?
A: Summer!
Domain and range of trig functions
Finding all trig values with limited info. Sin Θ = -3/5 and tan Θ < 0 Which quadrant? R= Cos Tan Csc Sec cot
Now try P. 52 Ex 9,10
Practical application Enter data on p. 49 into L1 and L2 on yopur calculator. Calculate sinreg
Do trig functions have inverses? Only if we restrict the domains
Using inverses to find angles Cos -1 (-0.5) Sin x = 0.7 in 0 < x < 2∏
homework P. 53 #24, 27- 30, 31,32,35 By Friday, p. 55 Quick Quiz 1-4. Must show work to get any credit.
Exit Slip True or false: The period of y = sin(x/2) is ∏. Justify your answer.