trigonometry

Find the exact value of cos(105)

(1-√3)/(2√2)

Find the exact value of sin(75)

(√3 + 1)/(2√2)

Find the exact value of cos(15)

(√3+1)/(2√2)

Find the exact value of sin(105)

(√3+1)/(2√2)

Find the exact value of cos(75)

(√3-1)/(2√2)

Find the exact value of sin(15)

(√3-1)/(2√2)

Find the exact value of cos(135)

-1/√2

Find the exact value of sin(135)

-1/√2

Find the exact value of sin(210)

1/2

Find the exact value of cos(210)

√3/2