Question

Trigonometry

Special Right Triangles
Find the exact value of cos 60* - cot 30* - cot 90*.

Answer 1

½ - sqrt(3)

Explanation:

cos(60) = ½

tan(30) = 1/sqrt(3)

cot(30) = sqrt(3)

tan(90) is undefined

cot(90) = 0

½ - sqrt(3) -0

½ - sqrt(3)