Question
What are trigonometrical identities?
Joshi sir comment
sin2A + cos2A = 1 and two similar formulae in terms of tanA, cotA, secA and cosecA
these are identities because these are true for all values of A
What are trigonometrical identities?
sin2A + cos2A = 1 and two similar formulae in terms of tanA, cotA, secA and cosecA
these are identities because these are true for all values of A