(1) write the negation of the statement.

my name is not robert smoker.

(2) write the given common argument form in symbols, then use a truth table to prove that it either is or is not a valid argument.

law of contraposition.

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.

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

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