Pre Calc Quiz Review

What is an equation for the cosine graph shown below? 11 -10 -9 -8 N -135 -90 -45 45 90 135 O y = 3 cos(0 - 45*) + 10 O y = 7 cos(0 - 45') + 3 O y = 3 cos(0 - 90') + 7 O y = 3 cos [2(0 - 45 )] + 7At a seaport, the depth of the water during the day can be found using the equation h = 6.0 cos 2x (t-8) 12.4 + 14 where h is the depth of water in feet and t is the number of hours after midnight. At 2:00 pm what will be the water's height? O 18.07 feet 7.23 feet O 8.03 feet O 6.17 feetWhich of the following is not an identity? 1. sec? x + csc2 x = sec2 x csc z ll. sec' x - csco = sec' x csc2 x Ill. cos' x = sin x(csex - sin x) O II OI O ll and Ill O III\fIf a parabola's focus Is at (3,-1) and diracirlx is at y = 2, what is the vertex farm of the aquatlon representing this parabola? y: %(a=3)3 +3 y=%(m+3)3+3 y={m+3)2 1 Find the centre and radius of the circle a~ + y' - 6x + 4y +7 =0. O centre (3, 2), radius 6 O centre (-3, 2), radius V6 O centre (3, 2), radius v 6 O centre (3, -2), radius v 6\fConvert the following parametric curve into Cartesian form: x = 3 sint, y = 4 sint ONone of these. O 4x2 + 3y? = 1 O y + = 1 3 4 ox ty' = 12Which of the following graphs represents the polar equation defined by: r = 2 + 2 cos 0? O -5 O 5 OO -5 EWhat is the subtraction of Vector B from Vector N? N = 2 units B-= 4-units O