mathswithmuza on Instagram: "The expression cos (pi/2 − theta) captures a fundamental relationship between cosine and sine. Geometrically, this comes from looking at a right triangle. If theta is one acute angle, then pi/2 − theta is the other acute angle, since the two must add up to a right angle. The cosine of an angle is defined as the ratio of the adjacent side to the hypotenuse, while the sine of the complementary angle uses the opposite side over the same hypotenuse. Because the side oppo

КАРТИНИ НА ЗАМОВЛЕННЯ | АФІРМАЦІЇ 🎨 on Instagram: "An abstract painting in shades of blue that reminds me of the Bermuda Triangle. 🌊✨ Deep, unexplored and mysterious, it feels like something else is hiding inside it, something that isn’t ready to reveal itself yet. When you look at these swirling strokes, it feels like they pull you into their own ocean of energies and meanings. 🌌💙 Video is copyright-protected #картинаафірмація #картинаафірмаціякиїв #картинанаполотні #картинаакрилом #art #ar