Answer please: Hector bought 45 tiles to make a patio. How many different ways can he arrange the tiles to make the patio? (again because i need people to explain)

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation:

irrational, cannot

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

its d hope this