Perform the indicated operations and, if possible, simplify.
? 
÷ 
A. 
B. 
C. 1
D. 
Answer: B
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Place your graphing calculator in parametric and degree modes. Set the window for Tmin=0, Tmax=360, Tstep=1, Xmin= -1.8, Xmax=1.8, Xscl=1, Ymin= -1.2, Ymax=1.2, Yscl=1. Set the functions to X1T=cos T, Y1T=sin T. Graph the circle of radius 1 on the screen. Use the trace feature to move a short distance around the circle.For what angle T is cos T ? 0.766? (Assume 0° ? T ? 90°.)
A. 40° B. 36.832° C. 50° D. 0.766°
Decide if the given value is a solution to the equation.t - 1 = 2 - (t + 0); t = 5
A. Yes B. No
Solve. Give your answer as a mixed number if appropriate.
= 
A. 34
B. 8
C. 
D. 17
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree.9z4 - 2z3 - 6z2 + 9
A. Binomial, degree 10 B. Trinomial, degree 4 C. None, degree 4 D. Trinomial, degree 9