question 3 part b \"Special\" Triangler-30.* Upload Assignment: See x E T ST#3 S
ID: 2920416 • Letter: Q
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question 3 part b
"Special" Triangler-30.* Upload Assignment: See x E T ST#3 STUDY GUIDE- x (31] Vikings 5x08 lvai CSecur https://blackboard howard execute/content/file/cmd=view content id= 2153201 1&course; id= 1084442 1 Contenit Show all your work . No work. No credit. Best Wishes! Croups Toxls Help Tegrity Classes 1. (20 points) Withoul the use of a calculalor, nd he ex value of the following a) om(75°) b) tan-l (tan (j) c) soc ( d) tan ( 5) 2. (20 points) Show that: (a) (cos(a) - sin(a) sin(B)+sin(a)+ cos(a) sin(B)-1 (b) sin(d) tary@) see(?)+1-sex.2(8) and (-0, oo) (a) 3sec(x)-4 (b) sin() 2sin() -3- 3. (20 points) Find all solutions to each of the following equations in the intervals [0, 2n) 4. (20 points) Given an example of a triangle where one angle is given, that cannot be solved using only the Law of sines. Use the La of Sines to solve the triangle a12,b 20 and a-30 . You may use a calculator for this problem, but you must show all of your work. O Type here to search 4/3/20183Explanation / Answer
b .sin2x-2sin(x) -3 =0
(sin (x) -3 ) ( sin (x) +1 ) =0
sin (x) = 3 , sin(x) =-1
sin x =-1
x = sin-1(-1)
x= 3pi/2
And in (- infinity,infinity), its x=2 pi n - (pi /2 ) , 2 pi n + (3 pi / 2)
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