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slega [8]
3 years ago
10

Sec (a) + tan (a) = sec (a) – tan (a)

Mathematics
1 answer:
Mariulka [41]3 years ago
7 0

Answer:

a = π n for n element Z

Step-by-step explanation:

Solve for a:

sec(a) + tan(a) = sec(a) - tan(a)

Subtract sec(a) - tan(a) from both sides:

2 tan(a) = 0

Divide both sides by 2:

tan(a) = 0

Take the inverse tangent of both sides:

Answer:  a = π n for n element Z

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Estimate 394/24 by first rounding each number so that it has only 1 nonzero digit.
larisa [96]

Answer:

48 million

Step-by-step explanation:

Since 48,000,000 has TWO non-zero numbers, not one, it can't be the

answer.

The largest digit in the given number is the ten-millions digit, so

you want to round to the nearest ten million, rather than the nearest

million.

47,859,600 rounds to 50,000,000, to one significant digit.

Normally, we would say "round to one significant digit," but you

probably have not seen that term. Your question means the same th

3 0
3 years ago
The diameter of a circle that has an area of 452.16 mm
irinina [24]
The diameter is 24 since if you ÷ it by 2 you get 12 to get area it is radius squared so 12 × 12= 144×pi which is 3.14= 452.16 mm you can even check in a calculator
3 0
3 years ago
Question: (Graph photo attached)
Anna11 [10]

The double bar graph shows the number of imports and exports for a company in a certain week.

On how many days was the number of exports greater than the number of imports?

Answer: From the given double bar graph, we clearly see:

Number of imports for a company on Monday = 15

Number of exports for a company on Monday = 7

Number of imports for a company on Tuesday = 18

Number of exports for a company on Tuesday = 9

Number of imports for a company on Wednesday = 14

Number of exports for a company on Wednesday = 14

Number of imports for a company on Thursday = 15

Number of exports for a company on Thursday = 6

Number of imports for a company on Friday = 9

Number of exports for a company on Friday = 19

From the above information, we clearly see that only on Friday the number of exports are greater than number of imports. Therefore, there is only 1 day when the number of exports greater than the number of imports.

Hence the option D. 1 is correct



8 0
3 years ago
Leroy wants to buy a tablet costing $210. His Mom agrees to pay $5 for every $2 Leroy saved. How much will each contribute?
Digiron [165]

Answer:

60$ for leroy and $150 for mom.

Step-by-step explanation:

4 0
2 years ago
Vicki works 19 hours per week. Her take home pay is $17.30 per hour. If Vicki is able to save all of her earnings, how long will
Deffense [45]

17.30 *19 = 328.70 per week

4000 / 328.70 = 12.17 weeks

 so it would take her 13 weeks

answer is B 13weeks

7 0
3 years ago
Read 2 more answers
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