Basic Trigonometry β A Quick Recap
Last updated at May 29, 2018 by Teachoo
Learn All Concepts of Chapter 2 Class 11 Relations and Function - FREE. Check - Trigonometry Class 11 - All Concepts
Sin, cos, tan
Value of sin, cos, tan at different angles
Basic Identities
cos
2
θ + sin
2
θ = 1
1 + tan
2
θ = sec
2
θ
1 + cot
2
θ = cosec
2
θ
Transcript
In right triangle ABC
sinβ‘π= (π πππ πππππ ππ‘π π‘π πππππ π)/π»π¦πππ‘πππ’π π
cosβ‘π= (π πππ ππππππππ‘ π‘π πππππ π)/π»π¦πππ‘πππ’π π
tanβ‘π= (π πππ πππππ ππ‘π π‘π πππππ π)/(π πππ ππππππππ‘ π‘π πππππ π)
coπ ππβ‘π= 1/sinβ‘π
π ππβ‘π= 1/cosβ‘π
cotβ‘π= 1/tanβ‘π
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