trigonometry

Related Questions

• If in any $\Delta ABC$ , $\cot \frac{A}{2},\cot \frac{B}{2},\cos \frac{C}{2}$ are in A. P. then

  ---

• AB is a vertical pole resting at the end A on the level ground. P is a point on the level ground such that AP = 3 AB. If C is the mid-point of AB and CB subtends an angle $\beta$ at P, the value of $\tan \beta $ is

  ---

• If $\sin \theta +\text{cosec}\theta =2,$ the value of ${{\sin }^{10}}\theta +\text{cose}{{\text{c}}^{10}}\theta $ is

  ---

• If $\cos \theta =\frac{8}{17}$ and $\theta $ lies in the 1st quadrant, then the value of $\cos (30{}^\circ +\theta )+\cos (45{}^\circ -\theta )+\cos (120{}^\circ -\theta )$ is

  ---

• If $\cos {{40}^{o}}=x$ and $\cos \theta =1-2{{x}^{2}}$, then the possible values of $\theta $lying between ${{0}^{o}}$and ${{360}^{o}}$is

  ---