Solving Trig Equations: Part 2 Challenge

In which quadrants is sine negative?

• First and Second

• Second and Third

• Third and Fourth

• First and Fourth

What is the reference angle when sine of theta equals -1/2?

• pi/6

• pi/4

• pi/2

• pi/3

What is the value of theta when the reference angle is pi/6 and sine is negative?

• 7 pi/6 and 11 pi/6

• pi/6 and 5 pi/6

• 7 pi/6 and 5 pi/6

• pi/6 and 11 pi/6

In which quadrants is cosine negative?

• Third and Fourth

• Second and Third

• First and Fourth

• First and Second

What function is used to find the reference angle for cosine equals -0.3?

• Cosine

• Sine

• Inverse Cosine

• Tangent

What is the reference angle calculated from the inverse cosine of 0.3?

• 1.266

• 1.047

• 0.523

• 1.500

What is the value of the first angle for cosine equals -0.3?

• 2.047

• 1.500

• 2.266

• 1.876

What is the value of the second angle for cosine equals -0.3?

• 3.407

• 4.266

• 3.500

• 3.141

What mode should the calculator be in to find the reference angle for cosine?

• Gradient mode

• Degree mode

• Scientific mode

• Radian mode

What is the process to find the angle in the second quadrant for cosine equals -0.3?

• 2 Pi plus the reference angle

• 2 Pi minus the reference angle

• Pi plus the reference angle

• Pi minus the reference angle