Inverse Trigonometric Ratio

sin^-1(-1/2)

• π/3
• π/6
• 5π/6
• -π/6

cos^-1(√(3)/2)

• π/3
• 2π/3
• π/6
• 5π/6

csc(cos^-1(√(3)/2))

• 2
• -2
• 2√3/3
• -2√3/3

sec^-1(-2)

• π/3
• 2π/3
• π/6
• 5π/6

tan^-1(√(3))

• π/3
• 2π/3
• π/6
• 5π/6

csc^-1(-√(2))

• π/4
• 3π/4
• -π/4
• -3π/4

cos^-1(tan(-π/4))

• 0
• π
• π/4
• 3π/4

sin^-1(-1) =

• π/2

• 0

• -1

• -π/2

cos^-1(0) = 

• π/2
• π
• 1
• none of these

sin(cos^-1(0))=

• 0
• 1
• π/2
• π