Given the cos 03261 find the sum if the two angles for Ans

Given the cos = 0.3261 find the sum if the two angles for . Answer should be in degrees.

Solution

in the interval (0^o,360^o)

cos = 0.3261

=cos^-1(0.3261)

=19.03^o,340.97^o

sum of angles = 19.03^o+340.97^o

sum of angles = 360^o