8 7 7 mg A) .. 25 B) -- C - - 25 ) 25 25 20) Find cos ze. 20) . 5 4 3 1 7 7 24 A - - -- - -- - ) 5 B) 25 C) 25 D) 25 Writethe expression asthesine oosme ortangent of adouble angle Then fund the exact value of the expresson 21) 0052 som sin2 300 21) V 3 1 -1 is, "'t A)- 2 B) 2 C) 2 D) 2 Rewrite the expression asan equivalent expression that does not contain powers of trigonometrictunctions greater than 1. 22) sin4x 3 1 fi) fi 3 5 ---200$2x --cos4x A) -8-+- oost 5) 2 + 2 3 1 1 9-- gooszx C)-g' --COSZ(+-8-COS4X 2 2 23) cos3 x 3 1 @ A)%oosx+loos3x B)-oosx--zoos3x 3 1 c)%cosx+loo53x+oos2x D)-zoosx--zcosm-M1 A .. ) 2(cos wx ' cos 2x) 1 24} 1 3) -2-(oos 2x - oos lox) m C) -2-(sm 10x +oos2x) D) 5an 24x2 25) sin 7x cosax 1 . A) -2-(sn 10x +sin 4x) 1 25) m B) E(cosiOx - oos 4x) Cl sin (oos 21x2) 1 D)E(sin10x + oos4x) Usethe given inform ' ' ' 12ertron to find the exact value of thetrigonometricfunclion. 26) Sm 9 = 75, 6 llesin quadrant IV Find oos' 2 25) ..... gpa A) B, .5. 2 13 13 C .. 13 26 ) 13 D) gag- Express the produd aa sum or difference. 27) oosSx oos8x 27) Al 005228x2 B) -1-(oos13x - sin ex) 1 C) -2-(oos 3x + cos 13x) D) %(00313x - cos 3x) Expre$the sum or difference as aproduct. 28) sin 8x + sin 4x 28) A)2oosBxsin2x B)25ln12x C)2sin6xsin 2x o)2sinexoos2x ' 29) oost- oosSx 29) , A)-20036xsin ax B)-2sin6xsin 3x C)200s6xoos$x D)2oos'3x SHORT ANSWER. Writethe word or phrasethat best oompleleseach statement or answersthe question. Verify the identity. so) gsm = get ..--" ;, V so) H n x - sm y CH Oi CE. Choose the one alternative that best completes the statement or answersthe question. MULTiPLE Find all solutions of the equation. 31 31)2003X1==0 A)x=--+2nnorx=-5-+2nn B)x---+nnorx- 3 4" EEN": D)x=-T-[+2nrtorx=%t-+2nn C)x=-5-+mzorx= 632)0082><=A [am 2 A)18'.,.7.71 PJ; 1511 32) ---- 8 6 8 B) 31 93. PE. 7" C)0,-2535.n.51 4' 4 4 T ' 3 Dlnosolution 33)235n2x-smx A IS. STE "'- 6 5)3,3 C)0n,112.71 D)19.7.13.7l 6 2' 2 ' 3' 3 34)snn2xoos2x=o .. TI - 34 A) 4 331'12'112'. ) C n n 4' 4' 4' 4 "PE WE"? Solve the equation on the interval [0, 2n). 35)(tanx+1)(oosx+1)=0 37: 7r< 35) A -,m.. 1.51 3" 7 ) 4 4 mo; 4! 4 oin'z'n- 9271,Z-47l,2n Solvethetrlengle. 36) as) B) 3:450, a=8.11,c=9.75 D) B=45".a=9.75,c=8.11 ven. D etermlne whether the given measurements produce one 6 (SSA) of atriangleare gi each trianglethat results. Round lengthsto the nearest tenth and Two sides and an angl or no triangle at all. Solve triangle. two triangles, angle meesmesto the nearest degree. 37) B:80",b=5,a=23 37) '- A)A=39"C=60",C=30 B)A=40",C=60",C=28 C) notriangle D)A=41",C=60",c=32 38)C:35",a=187,c=16.1 . as) '- A) A1= 42",B1 =1B",b1=27.4; B) notnangle A2=1m',82=7",b2=3.4 D)A=42",B=103",b=27.4 C)A1:103",B1= 42" b1 = 27-4: A2z7',52=1380,b2=3,4$ict; A) 14 Squareinches smmes C) 16 ' square inches 3) 31 Squareinches D) 33 square inches Soivethe triangle Ro . und iengihs to the nearest tenth and angie measuresto ih e nearest degree. 40) C 7 6 B 8 A A)A=47".B=58",C=75" B)A=47" B=7500=580 C) A=5sovs=75"-C=47o D) A=58",B=47"'C=750 41) a=6.b=8,0=1oso B) C=11.2,A=31O,B=430 A) c=14.1,A = 33", B=410 C) c=17,A = 29", B= 45" D) no triangie Use Heron'sformuia to find the area of thetriangie. Round to the nearest square unit. 42) a = 17 yards, b ==17 yards, 0 =17 yards A) 125 squareyards B) 134 square yards C) 128 square yards D) 131 square yards the point with the given poiar coordinates. Use a polar coordinate system to plot 51: 43) [' 4,T 3'3