Problem to solve: convert the following proposition to fully-reduced form using conversions (above) and identities from theorem 2.1.1 (page 35 in textbook). present your conversion as a 2-column, statement/justification argument. justify every step. do not create a truth table. statement justification ((p ) proposition to convert.

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

thats not a system of equations, that is a solution

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