CAT Important Formulae: Trigonometry & Coordinate Geometry
- Neha Gore
- last edited by Neha Gore
Trigonometry and Coordinate Geometry are two major topics in the CAT examination. This part might be a scoring section if the candidates are aware of all the formulae necessary to solve this section.
Let's take a look at all the important formulae for Trigonometry and Coordinate Geometry.
Trigonometric Identities:
Sine=Opposite/Hypotenuse
Secant=Hypotenuse/Adjacent
Cosine=Adjacent/Hypotenuse
Tangent=Opposite/Adjacent
Co−Secant=Hypotenuse/Opposite
Co−Tangent=Adjacent/Opposite
The reciprocal identities are given:
CosecΘ=1/sinΘ
secΘ=1/cosΘ
cotΘ=1/tanΘ
sinΘ=1/CosecΘ
cosΘ=1/secΘ
tanΘ=1/cotΘ
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Coordinate Geometry
The Distance Between two Points A and B:
AB² = (Bx – Ax)² + (By – Ay)²
The midpoint of the line joining the points (x1, y1) and (x2, y2) is:
[½(x1 + x2), ½(y1 + y2)]
The equation of a line which has gradient m and which passes through the point (x1, y1) is:
y – y1 = m(x – x1)