If cos (a) = 1/2 with a in qiv, find sec (a/2).

In the 30-60-90 triangle below side s has a length of and side r has a length

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'