trigonometry

Related Questions

• If $A+B+C={{270}^{o}},$ then $\cos \,2A+\cos 2B+\cos 2C+4\sin A\,\sin B\,\sin C=$

  ---

• If $b=3,c=4$ and $B=\frac{\pi }{3}$ , then the number of triangle that can be constructed is

  ---

• The value of $2({{\sin }^{6}}\theta +{{\cos }^{6}}\theta )-3({{\sin }^{4}}\theta +{{\cos }^{4}}\theta )+1$ is

  ---

• Let$0<x<\frac{\pi }{4}.$Then $\sec 2x-\tan 2x=$

  ---

• If in a triangle the angles are in A. P. and $b:c=\sqrt{3}:\sqrt{2}$ , then $\angle A$ is equal to

  ---