Ex 34, 8 Find the general solution of the equation sec2 2x = 1 – tan 2x sec2 2x = 1 – tan 2x 1 tan2 2x = 1 – tan2x tan2 2x tan2x = 1 – 1 tan2 2x tan2x = 0 tan 2x (tan2x 1) = 0 Hence We know that sec2 x = 1 tan2 x So, sec2 2x = 1 tan2 2x tan 2x = 0 taProve tan^{2}(x) (1cot^{2}x) = sec^{2}x en Related Symbolab blog posts High School Math Solutions – Trigonometry Calculator, Trig Identities In a previous post, we talked about trig simplification Trig identities are very similar to this concept An identityProve that 1 tan^2 x = sec^2 x We know that tan x = sin x/cos x and so tan 2 x = sin 2 x/cos 2 x We also know that sin 2 x cos 2 x = 1 because this is a Pythagorean identity We can rewrite the left hand side as (cos 2 x sin 2 x)/cos 2 x because 1 can be rewritten as cos 2 x/cos 2 x
1
