trigonometry

Related Questions

• $\tan 100{}^\circ +\tan 125{}^\circ +\tan 100{}^\circ \tan 125{}^\circ =$

  ---

• In $\Delta \,ABC$ , $a=2cm,b=3cm$ and $c=4cm$ , then angle A is

  ---

• 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 $\Delta ABC$ , $\frac{\cos A}{a}=\frac{\cos B}{b}=\frac{\cos C}{c}$ and the side $a=2,$ then area of the triangle is

  ---

• A balloon is coming down at the rate of 4 m/min. and its angle of elevation is 45° from a point on the ground which has been reduced to 30° after 10 minutes. Balloon will be on the ground at a distance of how many meters from the observer

  ---