Simplify: (sin θ − cos θ)2 − (sin θ + cos θ)2
−4sin(θ)cos(θ)
2
sin2 θ
cos2 θ

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality

The sum of four times a number and three is two times the number minus twenty nine

Two lines intersect and two of the vertical angles measure 115°. what is the measure of the other two vertical angles? 65° 85° 90° 245°