Right triangle
Sin A = Opp./ Hypo. = BC/AC
Cos C = Adj./Hypo. = BC/AC
Answer is D.
Sin A = Cos C
Answer:
Step-by-step explanation:
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0.8x + 2.71 = 1.898 - 0.6x
Add 0.6x to each side.
0.6x + 0.8x + 2.71 = 1.898 - 0.6x + 0.6x
1.4x + 2.71 = 1.898
Subtract 2.71 from both sides.
-2.71 + 1.4x + 2.71 = 1.898 - 2.71
1.4x = -0.812
____=_____
1.4 = 1.4
Divide by 1.4
x = -0.58
Hope I helped