Prove that
1+cos theta +sin theta/1+cos theta-1+sin =coses theta+ cot theta
Answers
Explanation:
Susy is rowing a boat. She takes 6 hours to row 48 km upstream whereas she takes 3 hours to go the same distance downstream.
(i) 62 : 47
Based on the above situation, answer the following questions: (a) What is her speed of rowing in still water?
(i) 8 km/h (ii) 12 km/h
(b) What is the speed of the stream?
(1) 6 km/h (ii) 4 km/h
(iii) 10 km/h
(iii) 8 km/h
(iv) 16 km/h
(iv) 12 km/h
(c) If the speed of a boat in still water be 15 km/h and speed of the stream is 3 km/h u much time will a person take to travel 45 km downstream?
(ii) 3 h
(iii) 3.75 h
(iv) 4.5 h
(i) 2.5 h (d) A girl walks at the speed of 6 km/h in still air. If there is a strong breeze blowing at the
speed of 1.5 km/h. What would her speed be if she is walking against the breeze?
(1) 7.5 km/h (ii) 6.5 km/h
(iii) 4.5 km/h
(e) How much time will she take to walk 15 km if she is walking
(i) 2 h
(ii) 1.5 h
(iii) 1 h
(iv) 1.5 km/h
the wind?
(iv) 0.5