Solve the following trig equation on the interval [0,2) 2cos^2x+cosx=0

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem