Answer:
x=52 m1= 40 m2= 140
Step-by-step explanation:
x-12+x+88=180 since they are linear pair
2x+76=180 collect like terms
2x=180-76
2×÷2=104÷2
×=52
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It would be

Because 4 times 4 is 16, the 2 is the exponent.
The absolute value of -32 is greater than the absolute value of -23
The cosine repeats itself every 360 degrees, and it mirrors at 0 and 180 degrees. It inverts around 90 and 270.
So without using a calculator, you can tell that:
cos(520)=cos(520-360)=cos(160)
cos(160) = cos(180-20) = cos(180+20) = cos(200)
cos(160) is NOT equal to cos(20), it would be -cos(20).
cos(160) = -cos(20) = -cos(-20)
So C is the only one unequal.