Find the equation of the line that is perpendicular to y = 2x + 4 and passes though the point (2, –2). A) y = 1 2 x – 1 B) y = – 1 2 x – 1 C) y = 2x + 1 D) y = –2x + 1

the answer is c

step-by-step explanation:

where are the options?

step-by-step explanation:

there are infinitely many solutions.

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