- 21. A boat is 200 m away from the base of a cliff.The angle of depression from the top of the cliff to the boat is 18^circ What is the angle of elevation from the boat to the top of the cliff?Calculate the height of the cliff to the nearest metre.
- Three friends, Mackenzie, Enola, and Shandra are saving different amounts of money each week. Mackenzie started with 18 and added 10 every week. Enola's savings are represented by the table below, and Shandra's savings are represented by the graph below. Enola's Savings Weeks (x) & Total Savings (y) 2 & 54 6 & 134 10 & 214 14 & 294
- Question Scientists are preparing two satellites to be launched The satellite , Space Explorer B, flies 43000 miles in 5 hours. The graph below represents the number of miles , y, that the satellite, Space Explorer A , flies in x hours.
- Which of the following methods is most efficient for evaluating the integral: int cot4(x)csc^2(x)dx Select only ONE answer straight-forward u-substitution using trig integration (with the identity csc^2(x)=cot^2(x)-1) Ore-write everything in terms of sine and cosine using trig integration (by first splitting up the integrand as cot^3(x)csc(x)cot(x)csc(x) , and then using the appropriate trig identity
- Which of the following methods is most efficient for evaluating the integral: int cot4(x)csc^2(x)dx Select only ONE answer. straight-forward u-substitution Dusing trig integration (with the identity csc^2(x)=cot^2(x)-1) Dre-write everything in terms of sine and cosine using trig integration (by first splitting up the integrand as cot^3(x)csc(x)cot(x)csc(x) then using the appropriate trig identity
