Which formula would be used to find the measure of angle 1

Option (4)

Step-by-step explanation:

By the Angle of intersecting secants,

"If two lines intersect outside a circle, then the measure of the angle between these lines or secants will be one half of the difference between the intercepted arcs."

From the picture attached,

Angle between the secants = ∠1

Measure of intercepted arcs are a° and b°.

By this theorem,

m∠1 =

Option (4) will be the answer.

w = 12

Step-by-step explanation:

Two angles are complementary so their sum is equal to 90 degrees

33 + 4w + 5 = 90 add like terms

4w + 38 = 90 subtract 38 from both sides

4w = 52 divide both sides by 4

w  = 13