Question

Determine the principal angle of an angle of measure -770 degrees

Answer 1

try 310

Answer 2

okay, and can u help me with another question

Answer 3

which angle terminates in the second quadrant: 212 deg, -135 deg, 3pi/4, 7pi/4

Answer 4

look at the diagram.... things to know... pi = 180, 2pi = 360

so 3/4pi = 135 7pi/4 = 315

angles are measured anticlockwise from zero....

negative angles as measured clockwise from zero...

hopefully this helps to work out the solution