Lesson Trigonometric Identities
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Reema Kumari(5)
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About Reema Kumari
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Reema Kumari is a student of Emmanuel Mission High School,currently studying in 10 th standard.
In this chapter, we are going to provide identities of trigonometry. There are so many identities, but if you learnt some, then all other will be easy. So,see the identities, sin2^2+cos2=1 cos^2=sin^2-1 sin^2=cos^2-1 1+tan^2=sec^2 sec^2-1=tan^2 sec^2-tan^2=1 1+cot^2=cosec^2 cosec^2-1=cot^2 cosec^2-cot^2=1 sec+tan=1/(sec-tan) cosec+cot=1/(cosec-cot)
