Answer:
x = y = 15
Step-by-step explanation:
Using the sine ratio and the exact value
sin45° = , then
sin45° = =
=
( cross- multiply )
2x = 30 ( divide both sides by 2 )
x = 15
The triangle is isosceles (45- 45- 90) , then 2 legs are congruent, so
y = x = 15
Answer:
6.3 × 10⁶ square miles
Step-by-step explanation:
We are given,
The radius of the moon is approximately 1000 miles.
We know that the moon resembles a sphere and also,
Area of sphere = , where r is the radius.
Now, the area of the moon = = 1.26 × 10⁷ square miles
Since, only the half of the area is clear to view.
So, the area left to view = = 6.3 × 10⁶ square miles.
Hence, the area of the moon in view is 6.3 × 10⁶ square miles.