Trigo + Binomial!

1+13+1336+133659+133659712+=2cosθ 1+\dfrac{1}{3}+\dfrac{1}{3}\cdot\dfrac{3}{6}+\dfrac{1}{3}\cdot\dfrac{3}{6}\cdot\dfrac{5}{9}+\dfrac{1}{3}\cdot\dfrac{3}{6}\cdot\dfrac{5}{9}\cdot\dfrac{7}{12}+\cdots=2\cos\theta

Find the value of θ\theta in degrees if 0θπ0 \le \theta \le π .

×

Problem Loading...

Note Loading...

Set Loading...