Answer please

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It's the first one

Step-by-step explanation:

a= -2

The problem says that b equals the opposite of 2.

The opposite of 2 is -2

Therefore a=b

b is greater or equal to a

Step-by-step explanation:

since a= -2 and b equals the opposite of 2 which is -2. Then b is equal a, however, this is not in the choices. therefore, the correct answer is b is greater or equal to a.

70 degrees

Step-by-step explanation:

If cosm<A = 342/1000, we are to find the value of a

Take arccos of both sides

cosm<A = 342/1000

cosm<A = .342

arccos(cosm<A) = arccos(0.342)

m<A = arccos(0.342)

m<A = 70 degrees

Hence the measure of m<A is 70 degrees