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3 years ago

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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aleksandr82 [10.1K]

Answer:

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Step-by-step explanation:

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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)

$A ( t ) = 10 e^{ -0.0188 t}\\A'(t)=10(-0.0188)e^{ -0.0188 t}\\A'(t)=-0.188e^{ -0.0188 t}\\$At 6 hours, the rate at which the amount of Valium is decaying therefore is:\\A'(6)=-0.188e^{ -0.0188*6}\\$=-0.168 ( to three decimal places)$

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Step-by-step explanation:

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