1. The angle θ lies in Quadrant I. sinθ=25

What is cosθ?

−21√5

−25

21√5

25

2. cos(−θ)=−2√5, sinθ>0

What is the value of sinθ?

2√5

−2√5

−23√5

23√5

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288

Which term describes the point where the perpendicular bisectors of the three sides of a triangle intersect?

The interior angles formed by the sides of a hexagon have measures that sum to 720°. what is the measure of angle a? enter your answer in the box. m∠a= °