You have an angle of elevation of 3 degrees and you're 2000 ft from base of 30 story building. <span>Draw a picture of this. Then tan(3) = ht of bldg/2000 </span> <span>I get a height of 104.82 ft rounded to 2 dp. </span>
<span>5. Ok. use the Pythagorean Theorem here to find the hypotenuse of the right triangle </span> <span>hypt = sqrt(50^2 + 9^2) </span> <span>Now sine of the angle of elevation is 50/hypt. = 0.984 or 0.98 to 2 dp.</span>
You have to work backwards to find volume, so just divide the volume (100) by the height (2) then divide that by the width (5) and you get your answer, 10
