1/cosec theta-cot theta-1/sin theta =to prove 1/sin theta-1/cosec theta+cot theta

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?