SINE/COSINE RULES (ANGLES OF ELEVATION AND DEPRESSION) The angle of elevation of the top of a church from a point on the ground is 30 degrees. The angle of elevation increases by 4 degrees when measured from a second point, also on the ground but 22m nearer the church than the first point.

a) Find the distance from the top of the church to the second point.

b) Find the height of the church (to the nearest m).

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit

Can someone tell me if these are correct?

If jack has 16 aplles and gives it to 5 friends how many does each get