Where’s Waldo?
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Trig Thursday
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Lawless Radians
100

Solve the linear equation 5/8 a = 8

a = 64/5

100

Find the radius or the circle given the equation (x+3)^2 + (y)^2  = 25

r = 5

100

Evaluate cos(40)tan(40)csc(40)

1

100

Assume U=30 degrees. Find sin(2U)cos(2U)

(sqrt(3))/4

100

What is 270 degrees in radians?

1.5pi

200

Solve for y: 2(y+6) + 3 = 6 - y

y = -3

200

A circle has a diameter from (1, -2) to (3, -2). Find its equation.

(x - 2)^2 + (y + 2)^2 = 1

200

Evaluate sec(a)/cos(a) - tan(a)/cot(a)

1

200

What’s the equivalent angle of 780 degrees?

60 degrees
200

A triangle had its angles in a ratio of 2:5:8. Find the measure of its largest angle in radians.

8/15 pi

300

Solve 2(x-2)^2 - 8 = 0

0, 4

300

Find the centroid of a triangle with the coordinates (1,3), (2,10), (-2,-5)

(1/3, 8/3)

300

cos(x)/sin(x) = 1.2. Find sec^2(x)

1.69

300

What is the amplitude of y=6 - 2cos(3x+5)

2

300

sin(A)/a = 0.4. Find b assuming angle B equals 45 degrees

b = 5/2(sqrt(2))

400

Solve for x if tan^2(x) + tan(x) = 0, [0, 2pi)

0, 3pi/4, pi, 7pi/4

400

A straight line is 15 units long. It terminates at the coordinates (4,7) and (x,-5). Find all possible x values.

x = -5, 13

400

Find x if cos(45 + x) = sin(27)

18

400

For what values does sin(sin^-1(x)) = x?

-1<x<1

400

Triangle XYZ is such that x=3, y=2, and z=4. Find cosY

cosY = 0.875

500

Solve for x if 2sin^2(x) - sin(x) = 0

0, pi, pi/6, 5pi/6

500

A parallelogram GHIJ has the vertices with coordinates G(5,1), H(8,-2), I(9,3), and J(x,0). Find x

x = 6

500

Simplify the expression (cos(x))/(1-sin(x))

tan(x)+sec(x)

500

Solve for P using cos^2(P) + 9cos(P) - 10 = 0 for the first quadrant. Use degrees. 

P = 0 degrees

500

A triangle XYZ is such that 2*<Y = <X + <Z, and y:z = sqrt(3):sqrt(2). Find <Z.

<Z = 45 degrees