Find the value of x.
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Step-by-step explanation:

Replace with given values, so

Multiply both sides of the equation by

Cancel common factor of

Exact value of cos(60) is 1/2

Cancel common factor of 2

or

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

the answer is c hope this