4. tan Θ if sin = 1/2 90° ≤ Θ ≤ 180° a. -√(3)/2
b. -√(3)/3
c. √(3)/2
d. √(3)/3

5. Find the value of
tan Θ if cot Θ = 2 0 ≤ Θ < 90° (write your answer as a fraction)

tan =

9514 1404 393

  4. b =-√(3)/3

  5. 1/2

Step-by-step explanation:

4. The tangent is negative in the second quadrant. The sine value tells you the reference angle is 30°, so the actual angle is 150°. The corresponding tangent is ...

  tan(150°) = -(√3)/3

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5. The cotangent is the inverse of the tangent, and vice versa.

  tan = 1/cot

  tan(θ) = 1/2

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)