Answer:
About 110.6
Step-by-step explanation:
The sine of an angle is the length of the opposite side divided by the length of the hypotenuse.
Hope this helps!
If y varies directly as x and y-21 when x is 7, find x when y = -5.
2 answers:
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Answer:
The answer to your question is letter D
Step-by-step explanation:
We know that the sum of the internal angles in a triangle equals 180°.
So, B = 30°, C = 90° and A = ?
A + B + C = 180°
Substitution
A + 30 + 90 = 180
Solve for A
A = 180 - 30 - 90
A = 180 - 120
A = 60°
To find "b". use the trigonometric function sine
sin B =
sin B x hypotenuse = Opposite side
Opposite side = sin 30 x 10
Opposite side = 0.5 x 10
Opposite side = b = 5.0
To find "a" use the trigonometric function cosine
Cos A = adjacent side / hypotenuse
Adjacent side = a = cos A x hypotenuse
Adjacent side = a = cos 60 x 10
a = 0.866 x 10
a = 8.66
The distance on map exists 32 cm and actual area exists 37.5 km².
<h3>How to estimate the actual area of the forest in square kilometers?</h3>
Given: Scale of the map exists at 1:250000.
(a) Distance between two cities = 80 km
= 80000 m
= 8000000 cm
Distance on map = 8000000 1/ 250000
= 32 cm
(b) Area of map = 6 cm²
Actual area = cm²
cm²
= 37.5 km²
Therefore, the distance on map exists 32 cm and actual area exists 37.5 km².
To learn more about actual area refer to:
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