trigonometry

Related Questions

• If $\cos \theta =-\frac{1}{\sqrt{2}}$and $\tan \theta =1$, then the general value of $\theta $is

  ---

• If $\cos 7\theta =\cos \theta -\sin 4\theta $, then the general value of $\theta $is

  ---

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

  ---

• The angles of elevation of the top of a tower (A) from the top (B) and bottom (D) at a building of height a are 30° and 45° respectively. If the tower and the building stand at the same level, then the height of the tower is

  ---

• A tower subtends an angle of 30° at a point distant d from the foot of the tower and on the same level as the foot of the tower. At a second point h vertically above the first, the depression of the foot of the tower is 60°. The height of the tower is

  ---