In the given figure, $\angle \mathrm{BAD}=65°, \angle \mathrm{ABD}=70°, \angle \mathrm{BDC}=45°$. Find $\angle \mathrm{ACB}$.

 

In the given figure, $\mathrm{AB}$ is the diameter of a circle with centre $\mathrm{O}$ and $\angle \mathrm{BCD}=130°$. Find $\angle D\mathrm{AB}$.

In the given figure, $\mathrm{AB}$ is the diameter of a circle with centre $\mathrm{O}$ and $\angle \mathrm{BCD}=130°$. If $\angle \mathrm{DBA}=k°$ then find $k$.

In the given figure, $\mathrm{O}$ is the centre of the circle. Tangents $\mathrm{A} \mathrm{and} \mathrm{B}$ meet at $\mathrm{C}$. If $\angle \mathrm{ACO}=30°$, then find $\angle \mathrm{BCO}$.

In the given figure, $\mathrm{O}$ is the centre of the circle. Tangents $\mathrm{A} \mathrm{and} \mathrm{B}$ meet at $\mathrm{C}$. If $\angle \mathrm{ACO}=30°$ and $\angle \mathrm{AOB}=k°$, then find the value of $k$.

In the given figure, $\mathrm{O}$ is the centre of the circle. Tangents $\mathrm{A} \mathrm{and} \mathrm{B}$ meet at $\mathrm{C}$. If $\angle \mathrm{ACO}=30°$, then find $\angle \mathrm{APB}$.

In the given figure, if the chord $\mathrm{ED}$ is parallel to the diameter $\mathrm{AC}$. Then, the measure of $\angle \mathrm{CED}$ will be

As shown in the figure, $∆\mathrm{PAB}$ is formed by three tangents to circle with centre $\mathrm{O}$ and $\angle \mathrm{APB}=40°$, then the measure of $\angle \mathrm{AOB}$ will be