https://tex.z-dn.net/?f=%5Cfrac%7Bcosa%7D%7B1%2Bsina%7D%2Btga%3D%5Cfrac%7Bcosa%7D%7B1%2Bsina%7D%2B%5Cfrac%7Bsina%7D%7Bcosa%7D%3D%5Cfrac%7Bcos%5E2a%2Bsina%2Bsin%5E2a%7D%7B(1%2Bsina)%5Ccdot%20cosa%7D%3D%5Cfrac%7B1%2Bsina%7D%7B(1%2Bsina)%5Ccdot%20cosa%7D%3D%5C%5C%5C%5C%3D%5Cfrac%7B1%7D%7Bcosa%7D%3Dseca
Пошаговое объяснение:
https://tex.z-dn.net/?f=%5Cfrac%7Bcosa%7D%7B1%2Bsina%7D%2Btga%3D%5Cfrac%7Bcosa%7D%7B1%2Bsina%7D%2B%5Cfrac%7Bsina%7D%7Bcosa%7D%3D%5Cfrac%7Bcos%5E2a%2Bsina%2Bsin%5E2a%7D%7B(1%2Bsina)%5Ccdot%20cosa%7D%3D%5Cfrac%7B1%2Bsina%7D%7B(1%2Bsina)%5Ccdot%20cosa%7D%3D%5C%5C%5C%5C%3D%5Cfrac%7B1%7D%7Bcosa%7D%3Dseca
Пошаговое объяснение: