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Alja [10]
3 years ago
9

If tanA = 1/5 find tan2A

Mathematics
1 answer:
Rainbow [258]3 years ago
5 0

Answer:

tan2A = \frac{5}{12}

Step-by-step explanation:

Using the trigonometric identity

tan2A = \frac{2tanA}{1-tan^2A}, thus

tan2A = \frac{2(\frac{1}{5}) }{1-(\frac{1}{5})^2 }

          = \frac{\frac{2}{5} }{1-\frac{1}{25} }

         = \frac{\frac{2}{5} }{\frac{24}{25} }

         = \frac{2}{5} × \frac{25}{24} = \frac{5}{12}

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AURORKA [14]

Answer:

the answer would be 2/5

Step-by-step explanation:

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there are, in total 20 students that can be chosen, so there is an 8/20 chance that it would be a boy, simplified that is 2/5

8 0
3 years ago
Factorise x2-10x-24 plz help ​
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A 1L IV contains 60meq of kcal. The IV was discontinued after 400ml has infused. How much lvl did the patient receive
Leya [2.2K]

If a 1L IV contains 60meq of kcal and the IV was discontinued after 400ml has infused, then the amount of IV received by the patient is 24meq of kcal.

Calculation for the Amount of IV

It is given that,

1L IV contains 60meq of kcal

⇒ 1000 mL of IV contains 60meq of kcal

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As per the question,

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= 4 × 6

= 24 meq of kcal

Hence, the patient receives 24meq of kcal amount of IV.

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6 0
2 years ago
How to find the fraction and decimal of 66 and 2/3?
puteri [66]
When converting to a fraction u multiply 66*3 getting 198 and u add the numerator getting 200 you u keep the demomenator which is 3 so 66and 2/3 is 200/3.
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3 years ago
Nadine has a cup of nickels and a cup of dimes.
WITCHER [35]

Answer: 135 nickels

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