Topics
Real Numbers
Number Systems
Algebra
Polynomials
Coordinate Geometry
Pair of Linear Equations in Two Variables
- Pair of Linear Equations in Two Variables
- Graphical Method with Different Cases of Solution
- Algebraic Methods of Solving a Pair of Linear Equations
- Substitution Method
- Elimination Method
Geometry
Quadratic Equations
Trigonometry
Arithmetic Progressions
Mensuration
Coordinate Geometry
Statistics and Probability
Triangles
Circles
Introduction to Trigonometry
Heights and Distances
- Angles of Elevation and Depression
- Problems based on Elevation and Depression
Areas Related to Circles
Surface Areas and Volumes
Statistics
Probability
Maharashtra State Board: Class 10
CISCE: Class 10
CISCE: Class 10
Formula: Trigonometric Ratios
\[sineA=\frac{\text{Perpendicular}}{\text{Hypotenuse}}\]
\[cosineA=\frac{\mathrm{Base}}{\text{Hypotenuse}}\]
\[tangentA=\frac{\text{Perpendicular}}{\mathrm{Base}}\]
\[cotangent A = \frac{\text{Base}}{\text{Perpendicular}}\]
\[secantA=\frac{\text{Hypotenuse}}{\mathrm{Base}}\]
\[cosecantA=\frac{\text{Hypotenuse}}{\text{Perpendicular}}\]
Maharashtra State Board: Class 10
CISCE: Class 10
CISCE: Class 10
Key Points: Trigonometric Ratios
For an acute angle A in a right-angled triangle:
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Hypotenuse is the side opposite the right angle.
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Perpendicular is the side opposite angle A.
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Base is the side adjacent to angle A.
Video Tutorials
Shaalaa.com | Introduction to Trigonometry part 1 (Introduction)
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Introduction to Trigonometry part 1 (Introduction)
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Introduction to Trigonometry part 2 (Sin, Cos, Tan Intro)
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Introduction to Trigonometry part 3 (Relation between Sin Cos Tan)
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Introduction to Trigonometry part 4 (Examples)
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Introduction to Trigonometry part 5 (Examples)
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