Trigonometri 2

Question

(1 / sin18) - (1 / cos36) =?

Cevap tam sayı

Answer 1

Payda eşitleyelim

$$\frac{cos36-sin18}{sin18.cos36}=$$  

$$\frac{sin54-sin18}{sin18.cos36}=$$  

$$\frac{2.cos36.sin18}{sin18.cos36}=2$$