2 years ago

Find the length of side BC give your answer to three significant figures

Mathematics

1 answer:

enot [183]2 years ago

8 0

Answer:

19.4 cm

Step-by-step explanation:

Hi there!

This is a right triangle. We're given an angle, the side adjacent to the angle and we're solving for the hypotenuse. Given this information, we can use the cosine ratio:

$cos\theta=\frac{adj}{hyp}$

Plug in the given angle and side

$cos71=\frac{6.3}{BC}\\BC=\frac{6.3}{cos71} \\BC=19.4$

Therefore, the length of BC is 19.4 cm when rounded to 3 significant figures.

I hope this helps!

You might be interested in

The dimensions of a gymnastic floor are 40 ft by 40 ft. the performance floor is 1 ft less, or 39 ft, per side.

Mashutka [201]

Answer:

the square root of 3200

Step-by-step explanation:

I'm not sure if this is right, because the format of the question wasn't clear, but it sounded like we have to find the diagonal distance of the room from one corner to the opposite. If the sides are 40ft long on both sides, we can use the Pythagorean Theorem to solve this:

40^2+40^2=c^2

1600+1600=c^2

3200=c^2

c=sqrt(3200)

or about 56.5

4 0

2 years ago

Is 46 greater or less than -79

Alona [7]

Answer:

46 is greater than -79

6 0