Find the measures of the numbered angles in each rhombus. So find 1 2 and 3

1) 120

2) 30

3) 30

Step-by-step explanation:

Angle 1 is the same as the angle shown at 120

Use that to find 2, which is also 3

so 180-120 = 60

divide by 2

2 and 3 are both 30 each

jml angle lkj & angle mj = lm

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