Trigonometrical Identities

Summary

sin A = cos (90^o - A)

tan A . tan (90^o - A) = 1

sin²A + cos²A = 1

1 + tan²A = sec²A

1 + cot²A = cosec²A

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	Introduction
	Some Trigonometrical Identities
	Summary

Subjects
English
Math
Geometry