Find the value of tan Θ is sin Θ = 1/2 90° ≤ Θ ≤ 180° a. -√3/2
b. -√3/3
c. √3/2
d. √3/3

9514 1404 393

  b.  -√3/3

Step-by-step explanation:

From your knowledge of the values of trig functions of special angles, you know sin(30°) = 1/2. For an angle in the second quadrant, this means the reference angle is 30° and the actual angle measure is 180° -30° = 150°.

The corresponding value of the tangent function is -√3/3, negative in the second quadrant.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5