Maths formulas for class 10 chapter- Introduction to Trigonometry

Math Formulas

Class 10 chapter- Introduction to Trigonometry Formula 

Introduction and Application of Trigonometry

Definition of Angle If we rotate a line segment with respect to any of its end points, then amount of rotation is called angle. If rotation exists in anti-clock wise direction, angle is said to be positive, otherwise negative.

angle grpah

Trigonometric ratios for any right angled triangle

sineθ  =sinθ, cosineθ = cosθ, tangentθ = tanθ, cosecantθ = cosecθ, secantθ = secθ

trignometric ratio

Where p→perpendicular, h→ hyptenuse, b→ base

Trigonometric Identities

formula of trignometric

Values of Trigonometric ratios of 0° to 90°

θ 0 ° 30 ° 45 ° 60 ° 90 °
sin θ° 0 1/2 1/2 3/2 1
cos θ° 1 3/2 1/2 1/2 0
tan θ° 0 1/3 1 3 Not defined

Line of sight : The line of sight (or line of vision) is the line from our eyes to the object.

Angle of Elevation : Angle between horizontal line and line of sight, if the object is above the horizontal level of eyes.

Angle of Depression : Angle between horizontal line and line of sight, if the object is below the horizontal level of eyes

line of sight

Physics Wallah prepared detail NCERT Solutions do solve questions given in NCERT text book with the help of NCERT Solution for class 10 Maths.

 

To download the pdf of maths formulas for class 10 chapter- Introduction to Trigonometry click the Link given below 

Maths formulas for class 10 chapter- Introduction to Trigonometry

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