1.

Which of the following identities , wherever defined, hold (s) good ?

Answer»

`COT alpha - TAN alpha = 2 cot 2 alpha`
`tan (45^(0) + alpha) - tan (45^(0) - alpha) = "2 COSEC 2" alpha`
`tan (45^(0) + alpha) + tan (45^(0) - alpha) = 2 SEC 2 alpha`
`tan alpha + cot alpha = 2 tan 2 alpha`

Answer :A::C


Discussion

No Comment Found