CBSE math

CBSE maths CBSE Sample Guess Question Papers CBSE results social science hindi X X11 syllabus

                                   Introduction to Trigonometry

In a right triangle ABC right angled at B

Sin A = opposite site (perpendicular)/hypotenuse = BC/AC

Cos A = adjacent site (base)/hypotenuse = AB/AC

Tan A = opposite site (perpendicular)/adjacent site (base) = BC/AB

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