9 March 2020 Sergiu Funieru The formula for sin^2 a + cos^a [the Pythagorean identity] 0 The formula for sin^2 a + cos^a [the Pythagorean identity] Have you seen this? 0
![The formula for sin^2 a + cos^a [the Pythagorean identity]](https://lunlun.com/wp-content/uploads/2020/03/The-formula-for-sin^2-a-cos^a-the-Pythagorean-identity.png "The formula for sin^2 a + cos^a [the Pythagorean identity]")