EXAMPLE 6 7= 38
10-102
If m27 = 38° and mZ10 = 102°, find each measure.
a. m1 = 78
f. m26 =
b. m 22 = 7
g. m28 =
k. m213 =
2
3
9
10
12
11
1. m214 =
c. 23 = 0
h. m29 =
56
m. m 15 =
13
14
8
7
16
d. m24 =
1
i. m211 =
n. m216 =
e. m25 =
j. m212=
EXAMPLE 7
If m 22 = 41°, mZ5 = 940, and mZ10 = 1099, find each measure.
a. mZ1 =
d. m26 =
g. m29 =
b. m23 =
e. m27 =
5
c. m/4 =
f. m28 =

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft