Points to Remember

Points to Remember

• Trigonometric ratios are

• Reciprocal trigonometric ratios

• Complementary angles

sin θ = cos(90º − θ)

cos θ = sin(90 º − θ)

tan θ = cot(90 º − θ)

cosec θ = sec(90º − θ)

sec θ = cosec(90º − θ)

cot θ = tan(90º − θ)