Find the equation of the straight line
that passes through (5, 6) and (5, −6).

9514 1404 393

  x = 5

Step-by-step explanation:

These points have the same x-coordinate, so are on the same vertical line:

  x = 5

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°