Which of the following describes the correct process for solving the equation 3x + 6 = 21 and arrives at the correct solution?
1 answer:
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OPTION A is the correct answer.
Answer:
C
Step-by-step explanation:
The solution triangle is attached below :
Tonobtinnthe Angle formed, θ; we apply trigonometry ;
Using ;
Cos θ = Adjacent / hypotenus
Cos θ = 4 / 7
θ = Cos^-1(4/7)
θ = 55.15°
θ = 55°
