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Ugo [173]
3 years ago
11

What is the tangent ratio for ∠E

Mathematics
2 answers:
oksian1 [2.3K]3 years ago
4 0

Answer:  The tangent ratio for angle E is \dfrac{3}{4}.

Step-by-step explanation:  We are given to find the tangent ratio of angle E in the figure.

From the figure, we note that

the triangle DEF is a right-angled triangle, where ∠D = 90° and ∠E is an acute angle.

We know that

tangent ratio of an angle is given by the length of the perpendicular divided by the length of the base associated with that particular angle.

Now, for angle E, we have

perpendicular = DF = 6 units

and

base = DE = 8 units.

Therefore, the tangent ratio for angle E will be

\tan \angle E=\dfrac{perpendicular}{base}\\\\\\\Rightarrow \tan \angle E=\dfrac{DF}{DE}\\\\\\\Rightarrow \tan \angle E=\dfrac{6}{8}\\\\\\\Rightarrow \tan \angle E=\dfrac{3}{4}.

Thus, the tangent ratio for angle E is \dfrac{3}{4}.

Stells [14]3 years ago
3 0
Tan E = 6/8 = 3/4

answer
3/4
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Solve for the missing length and the other two angles in the triangle below
Klio2033 [76]

Answer:

AC = 3.72 units

Angles:

A = 132.6°

C = 27.4°

Step-by-step explanation:

AC² = 5² + 8² - 2(5)(8)cos(20)

AC² = 13.82459034

AC = 3.718143399

3.718143399/sin20 = 8/sinA

sinA = 0.7358944647

A = 180 - 47.38285134

A = 132.6171487

3.718143399/sin20 = 5/sinC

sinC = 0.4599340405

C = 27.38285134

5 0
3 years ago
M is proportional to the cube of r. when r=3m,m=216.when r=5 find the value of m
klio [65]

Answer:

The value of m is 1000 for r=5

Step-by-step explanation:

Given that m is proportional to the cube of r

It can be written as:

m \propto\ r^3

When the proportionality symbol is removed a proportionality constant is introduced in the equation.

Let k be the proportionality constant

m = kr^3

Given

r=3,m=216

Putting the values

216 = k(3)^3\\216 = k * 27\\k = \frac{216}{27}\\k = 8

The equation will now become

m = 8r^3

Putting r = 5

m = 8(5)^3\\m = 8 * 125\\m = 1000

Hence,

The value of m is 1000 for r=5

7 0
3 years ago
Amy is scuba diving. She starts at – 15.5 m relative to the ocean surface. She swims
solniwko [45]

Answer:

-9.85

Step-by-step explanation:

-15.5 - 4.2 = -19.7

Negatives work like positives

19.7 / 2 = 9.85

Turn that into a negative

-9.85

3 0
3 years ago
A certain prescription drug diminishes in the system at a rate of 25% per hour. If a person was administered 1450mg of the drug,
Helen [10]

9514 1404 393

Answer:

  • 459 mg
  • about 20 hours

Step-by-step explanation:

The decay factor is 1 -25% = 0.75 per hour, so the exponential equation can be written ...

  r(t) = 1450·0.75^t . . . . . milligrams remaining after t hours

__

a) After 4 hours, the amount remaining is ...

  r(4) = 1450·0.75^4 ≈ 458.79 . . . mg

About 459 mg will remain after 4 hours.

__

b) To find the time it takes before the amount remaining is less than 5 mg, we need to solve ...

  r(t) < 5

  1450·0.75^t < 5 . . . . use the function definition

  0.75^t < 5/1450 . . . . divide by 1450

  t·log(0.75) < log(1/290) . . . . . take logarithms (reduce fraction)

  t > log(1/290)/log(0.75) . . . . . divide by the (negative) coefficient of t

  t > 19.708

It will take about 20 hours for the amount of the drug remaining to be less than 5 mg.

7 0
3 years ago
Given that events A and B are independent with P(A) = 0.46 and
jok3333 [9.3K]

Answer:

Given that events A and B are independent with P(A) = 0.46and; P(B|A)=0.85 determine the value of P(B) , rounding to the nearest thousandth , if necessary .

Step-by-step explanation:

3 0
3 years ago
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