exam #3 jeopardy

trig equations

100

tan(x) = -1

0 <= x < 360º

x = 135º, 315º

200

cos²(3x) = 1

x = 0º, 60º

300

7sin(t) + √(2) = 5sin(t)

0 <= x < 360º

t = 225º, 315º

400

2sin(x) - 1 = csc(x)

0 <= x < 360º

x = 90º, 210º, 330º

500

tan²(x/4) = 1

0 <= x < 360º

x = 180º

complex numbers

100

(6-4i)-(-4-7i)

10+3i

200

(4-i)(6+2i)

26+2i

300

(4+3i)/(-5+2i)

-(14/29)-(23/29)i

400

write complex number in trigonometric form

z=5-4i

6.4cis(321.3º)

500

i⁵³

i

oblique triangles

100

Solve for all missing parts of the triangle. ∠C=125º, ∠B=5º, b=510 cm

∠A=50º, a=4482.6 cm, b=4793.3 cm

200

∠Solve for all missing parts of the triangle. ∠C=23º, b=3.7 in, a=6.4 in

∠B=25.8º, ∠A=131.2º, c=3.3 in

300

Solve for all missing parts of the triangle.

∠C=30º, ∠A=61º, b=8m

∠B=89º, a=7, c=4

400

Solve for all missing parts of the triangle.

a=12 cm, b=18 cm, c=28 cm

∠A=17º, ∠B=26º, ∠C=137º

500

Solve for all missing parts of the triangle. ∠C=59º, c=54 in, a=80 in

NO SOLUTION

vectors

100

for v=<24, 8>

find 0.5v

<12, 4>

200

for u=-4i+8j and v=-3i-8j

find u + v

-7i

300

for u=-4i+8j and v=-3i-8j

find |v|

8.54

400

for u=-4i-8j and v=-3i-8j

find 3u-2v

3(-4i-8j)+2(3i+12j)

-6i

500

find the angle between the vectors

u=-4i+8j and v=-3i-8j

132.88º