3-Se está cambiando un piso de cerámica de forma cuadrangular, que tiene 500 baldosas por lado. Ya se han colocado 250 filas de 250 baldosas cada una.
del total de baldosas para completar el piso? porfavor es para ahora​

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

the answer is d

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