An observer at the top of a tower of height 20m sees a man due to east of him at an angle of depression of 27 degree. he sees another man due to south of him at an angle of depression of 30 degree. find the distance between the men on the ground

What is the value of r of the geometric series?

How do you find the area of a triangle

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.