Use the given information to determine which of the following relationships can be proved and why.

  see below

Step-by-step explanation:

Given only two congruent angles, you can only prove similarity (by AA). You need to have at least one pair of corresponding sides be congruent before you can prove the triangles congruent.

answer4 to the second power is 16

and 4 to the third power is 64,

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