Math Formulas

Geometry → Trigonometry → Simplifying trigonometric expressions

MR-243 / 1176.

Simplify the following expression:

$t g^{2} x - s i n^{2} x = t g^{2} x \cdot s i n^{2} x$

MR-185 / 1353.

Prove the following identity::

$s i n^{4} α + c o s^{2} α + s i n^{2} α \cdot c o s^{2} α = 1$