Double Angle Formulas Trigonometry Teachoo 2x 3x Formula Provi
Proving the trigonometric identity $(\tan{^2x}1)(\cos{^2(x)}1)=\tan{^2x}$ has been quite the challenge I have so far attempted using simply the basic trigonometric identities based on the Pythagorean Theorem I am unsure if these basic identities are unsuitable for the situation or if I am not looking at the right angle to tackle this problem1 sin 2 x cos 2 x = 1 cos 2 x sin 2 x cos 2 x = 1 2 tan 2 x 1 sin 2 x cos 2 x = 1 cos 2 x sin 2 x cos 2 x = 1 2 tan 2 x 32 ( sin x cos x ) 2 = 1 2 sin x cos x ( sin x cos x ) 2 = 1 2 sin x cos x
