Chose 1
A (3.5,0.5)
B (3.6,1)
C (4.3,3)
D (4.5,3.5)

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

angle efh= angle egh

-1/3(x+1)^5

i’m pretty sure this is correct

more i think

hope this !