Which relation is a function? {(0, 1), (0, 2), (1, 2), (1, 3)}

{(–4, –6), (–3, –2), (1, –2), (1, 0)}

{(8, 1), (4, 1), (0, 1), (–15, 1)}

{(–2, –12), (–2, 0), (–2, 4), (–2, 11)}

x=half

step-by-step explanation:

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

/

step-by-step explanation:

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