trigonometry

Related Questions

• If $A={{\cos }^{2}}\theta +{{\sin }^{4}}\theta ,$ then for all values of $\theta$

  ---

• If $\sin x+{{\sin }^{2}}x=1$, then the value of ${{\cos }^{12}}x+3{{\cos }^{10}}x+3{{\cos }^{8}}x+{{\cos }^{6}}x-2$ is equal to

  ---

• In a triangle $ABC,$ $a=4,b=3$ , $\angle A={{60}^{o}}$. Then c is the root of the equation

  ---

• In $\Delta ABC$ , $c\cos (A-\alpha )+a\cos (C+\alpha )=$

  ---

• $\sin (\pi +\theta )\sin (\pi -\theta )\,\text{ cose}{{\text{c}}^{2}}\theta =$

  ---