(b) The angle of elevation of the top of a building from the top of a vertical pole is 30°. The pole is 2m high and its foot is 12m from that of the building. Find, correct to 2 d. p,the :
(I) height of the building,
(ii) angle of depression of the foot of the pole from the top of the building;
(iii) angle of elevation of the top of the pole from the foot of the building.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20