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Shtirlitz [24]
3 years ago
6

What is the value of tan A? I'm confused

Mathematics
2 answers:
Oliga [24]3 years ago
6 0
Tan(A) = Opp/Adj = CB / AC = 12/9 = 4/3

hope it helps
Mama L [17]3 years ago
6 0
Tanθ=(length of opposite side)/(length of side adjacent to the angle)

tanθ=12/9   *15 is the hypotenuse of the triangle. Don't use this for tan!

θ=53.13°
I am assuming you don't need this in radians?

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Answer:

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(b)If A(t)=5mg

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5= 10 e^{ -0.0188 t}\\$Divide both sides by 10\\0.5=e^{ -0.0188 t}\\$Take the natural logarithm of both sides\\ln (0.5)=-0.0188 t\\t=ln (0.5) \div (-0.0188)\\$t=36.87 hours (to two decimal places.)

(c)

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