Pyetja
Vërteto identitetet e mëposhtme.
- $sec^4 \theta - tan^4 \theta = sec^2 \theta + tan^2 \theta$
- $cosec^2 x - sin^2 x = cot^2 x + cos^2 x$
- $sec^2 A(cot^2 A - cos^2 A) = cot^2 A$
- $1 - cos^2 \theta = (sec^2 \theta - 1)(1 - sin^2 \theta)$
- $\frac{1 - tan^2 A}{1 + tan^2 A} = 1 - 2 sin^2 A$
- $sec^2 \theta + cosec^2 \theta = sec^2 \theta cosec^2 \theta$
- $cosec A sec^2 A = cosec A + tan A sec A$
- $(sec \theta - sin \theta)(sec \theta + sin \theta) = tan^2 \theta + cos^2 \theta$
