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Chapter: 9th Maths : UNIT 6 : Trigonometry

Points to Remember

Maths : Trigonometry: 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)

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9th Maths : UNIT 6 : Trigonometry : Points to Remember | Trigonometry | Maths


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