trigonometry

Related Questions

• If $\alpha +\beta -\gamma =\pi ,$then${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta -{{\sin }^{2}}\gamma =$

  ---

• We are given b, c and $\sin B$ such that B is acute and $b<c\sin B$. Then

  ---

• If $\tan \alpha =\frac{m}{m+1}$and $\tan \beta =\frac{1}{2m+1}$, then $\alpha +\beta =$

  ---

• The value of $\cos 52{}^\circ +\cos 68{}^\circ +\cos 172{}^\circ $ is

  ---

• The period of $f(x)=\sin \left( \frac{\pi x}{n-1} \right)+\cos \,\left( \frac{\pi x}{n} \right)\,\,,\,n\in Z$ , $n>2$ is

  ---