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diamong [38]
3 years ago
11

Which angle has a sine of −12 and a cosine of −3√2 ? A 7π6 B 4π3 C 5π6 D 5π3

Mathematics
1 answer:
kobusy [5.1K]3 years ago
6 0

Answer:

A. 7π/6.

Step-by-step explanation:

I think you mean a sine of -1/2  and cosine of -√3/2   ( the values in the question are not possible)

Angle  π/6 has a sine of  1/2 and a cosine of √3/2  ( from the 30-60-90 triangle).

This angle must be in the third quadrant because the sin and cos are negative.

So the answer is π +π/6 = 7π/6.

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5 cm is about 2 inch. Explain in a line graph to find out how many inch are in 50 cm.
KiRa [710]

Answer:

20 inches

Step-by-step explanation:

If that's centimeters on the x-axis and inches in the y-axis, then the slope is 2/5 and the y-intercept is 0.

y=\frac{2}{5}x

The slope of 2/5 in this context means 2 inches per 5 centimeters. Then, either by solving the equation or by graphing the line, you can determine that there are about 20 inches in 50 centimeters.

7 0
2 years ago
I’ll give you brainliest!
weeeeeb [17]

Answer:

2139m (total area)

Step-by-step explanation:

I am like 98% sure this is right

23* 31= 713 (1 side area)

713+713=1426 (2 sides area)

31-12=19 (middle height)

19*23= 437 (middle area)

437+1426=2139m (total area)

7 0
2 years ago
Read 2 more answers
Deciaml equvalent to 7/8
nordsb [41]

Answer:

0.875

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the the Unknown sides (please help)
ololo11 [35]

Answer:

10) x = 8.12

12) x = 5.5

Step-by-step explanation:

10) Since the leg adjacent to the angle is given and the leg opposite to the angle needs to be figure out the Tangent ratio will be used which states Tan(32°) = \frac{x}{13} and simplified, will give the answer 8.12 to the nearest hundreths.

12) The leg opposite to the right angle is given which means that its the hypotenuse. The hypotenuse is given and the side adjacent to the angle needs to be figured out so Cosine ration will be used. Which states; Cos(60°) = \frac{x}{11}. Simplified further will give the value of 5.5 exact.

Hope this helped, Good Luck!

7 0
3 years ago
Read 2 more answers
If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)?<br> Enter the correct answer
xenn [34]

Answer:

1

Step-by-step explanation:

To evaluate (g ○ f)(0), substitute x = 0 into f(x) then substitute the value obtained into g(x), that is

f(0) = 5(0) + 1 = 0 + 1 = 1, then

g(1) = 1³ = 1

5 0
3 years ago
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