Do you mean 0.8 = 8/10 = 80%? Ohhh... then it's 1.25!
Hope this helps!
Pedro can ride his bike at 28 miles per hour
Observe Moon;s center on a Full Moon night from two places 100 km apart for parallax
θ
.. Then
α
= 100/6378 radian = 0.0156789 radian = 0.8983346 deg. The distance of the Moon then will be approximately 6378 sin(0.449167)/sin (
θ
/2). The other way about , if the distance is known to be 384000 km, theta is nearly 0.1492 deg = 54", nearly.. .
X = arctan(32/19)
x = 59.30 degrees.
You don't say if the answer needs to be rounded, so round it as needed.