A sail is in the form of a right triangle. The angle at its lower edge is 57o. Which is the size of the angle formed at the top of the sail?

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aravindg · Answer

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anonymous · Answer

if you know it is a right triangle then you have an angle of 90 degrees as well as they give you another angle of 57.  A triangles angles will always add up to 180. so if you were to add 90 and 57 together and subtract that from 180, you will find your answer :)