cot 65 derajat + cos 82 derajat

cot 65 = cot 30+cot 15 = akar 3+ ( cot(45-30)) = akar 3 + 1 - akar 3 = 1
cos 82 = cos 90 - cos 8 = 0-0.99 = -0.99
cot65-co82 = 1-(-0,99) = 1,99