write the formula for cos 2 x in terms of tan x
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Chapter wise Important Questions for CBSE Class 10 Maths. Chapter 1 - Real Numbers. Chapter 2 - Polynomials. Chapter 3 - Pair of Linear Equations in Two Variables. Chapter 4 - Quadratic Equations. Chapter 5 - Arithmetic Progressions. Chapter 6 - Triangles. Chapter 7 - Coordinate Geometry.
Real Numbers
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