If f(x) = cos2x + sec2x, then

We have, f(x) = cos2x + sec2xWe know that, A.M ≥ G.M.⇒ cos02x + sec2x ≥ 2⇒ f(x) ≥ 2

Q31 of 76 Page 52

If f(x) = cos²x + sec²x, then

We have, f(x) = cos²x + sec²x

We know that, A.M ≥ G.M.

⇒ cos0²x + sec²x ≥ 2

⇒ f(x) ≥ 2

Find the general solution of the equation

[Hint: Put which gives ]

If sin θ + cosec θ = 2, then sin²θ + cosec²θ is equal to

If tan θ = 1/2 and tan ϕ = 1/3, then the value of θ + ϕ is

Which of the following is not correct?