Question No. 12, Question No. 16

Lesson#15
Question No. 12
Q12:Assuming the average distance of the earth from the sun to be 148×〖10〗^6 and the angle subtended by the sun at the eye of a person on the earth of measure 9.3×〖10〗^(−3) radian . Finds the diameter of the sun ?
Question No. 16
Q16:The moon subtends an angle of 0.5° at the eye of an observer on earth.
The distance of the moon from the earth is 3.844×〖10〗^5 approx.
What is the length of the diameter of the moon ?
Q17:The angle subtended by the earth at the eye of the spaceman , landed on the moon is 1°〖 54〗^′.The radius of the earth is 6400Km. Find the approximate distance between the moon and earth?
Distance between Moon and Earth=386007
Exercise No.9.1
Chapter No.9
Fundamentals of Trignometry
maths
part 1