Angle of deviation

The surface of the rotating cone is 30 cm2 (with a circle base), and its surface area is 20 cm2. Calculate the deviation of this cone's side from the base's plane.

Correct answer:

A =  60 °

Step-by-step explanation:

S1=30 cm2 S2=20 cm2 S1 = S2 + π r2 r=(S1S2)/π=(3020)/3.14161.7841 cm S2 = π r s s=S2/(π r)=20/(3.1416 1.7841)3.5682 cos A = r/s A=π180°arccos(r/s)=π180°arccos(1.7841/3.5682)=60=60°

Try calculation via our triangle calculator.




Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
See also our right triangle calculator.
See also our trigonometric triangle calculator.

 
We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions: