What is the result of adding these two equations? 2x+3y= -5 5x - y = - 12
1 answer:
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<u>Short answer</u> = C) 8/10
<u>Working :</u>
Tan A = 8/6 = Opposite / AdjacentOpposite = 8 units
Adjacent = 6 units
Hypotenuse =
=
=
= 10 units
Cos B = Adjacent/ Hypotenuse
∴ cos B= 8/10
