Given: δxyz ab is a midsegment parallel to xy. the slope of ab is 2 3 . what is the slope of xy?

2/3

Step-by-step explanation

Since AB is a midsegment parallel to XY, its slope and the slope of XY are the same.

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92