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Musya8 [376]
3 years ago
5

Choose the equation you would use to find the altitude of the airplane. tan70 = 0 tan70 = sin70 =

Mathematics
1 answer:
KonstantinChe [14]3 years ago
7 0
The situation is represented by a drawing with a right triangle where an airplane is at the top corner, the elevation angle (opposite to the airplane) is 70°, the height (vertical leg) is x, and the adjacent leg (horizontal leg) to the 70° angle is 800.

Then, to find the height x, which is the opposite leg to the angle,  you can use the tangent ratio, which is opposite leg divided by adjacent leg:

tan(x) = opposite leg / adjacent leg => tan(70°) = x / 800

Answer: tan(70°) = x / 800
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3 years ago
12 is what percentage of 80
PIT_PIT [208]

Answer:  " 15 % " .

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     →   " 12 is <u>  15% </u> of 80 " .

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Step-by-step explanation:

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12 = (n/100) * 80 ;

12 = (80n) /100 ;  Solve for "n:

Note:  80/100 = (80/10) / (100/10) = (8/10) = 0.8  ;

12 = (0.8)n  ;

↔ (0.8n) = 12

Multiply each side of the equation by "10" ; to get rid of the "decimal" ;

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to get:

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8n = 120 ;

Divide each side of the equation by "8" ;

to isolate "n" on ONE SIDE of the equation; & to solve for "n" ;

8n/8 = 120/ 8 ;

_______________________________

to get:

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n = 15 .

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Answer:  " 15 % " .

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     →   " 12 is <u>  15% </u> of 80 " .

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Hope this helps!

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