Find the solution set for the given inequality if the replacement set is {1, 2, 3, 4, 5, 6}.

3x – 5 ≥ 7

a.
{1, 2, 3}

b.
{4, 5, 6}

c.
{1, 2, 3, 4}

d.
{5, 6}

the first option is the answer.

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