Answer:
![x=1](https://img.qammunity.org/2020/formulas/mathematics/high-school/tm1gspaocfnp875ybbxdnb3weyr5fcnjyq.png)
Explanation:
In order to find the value of "x", it is important to remember that:
![Tangent\ chord\ angle=(1)/(2)(Intercepted\ arc)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tovo557w1n6o7zxhjkpkpfw0urnm5n7rp8.png)
We can identify in the figure that:
![Tangent\ chord\ angle=(43x)\°\\\\Intercepted\ arc=AB](https://img.qammunity.org/2020/formulas/mathematics/middle-school/gmk6xhrc0t4ozt54dgojws0qz53r67a1kb.png)
Then:
![43x=(1)/(2)AB](https://img.qammunity.org/2020/formulas/mathematics/middle-school/hjkdl34u4fekkswn0wbsyxt7muy98dgf62.png)
Solving for AB:
![2(43x)=AB\\\\AB=86x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tekj3jnvajtpdqgyzw3j46rwoa9mg1s79k.png)
Now, since there are 360° in a circle, we know that:
![AB+(272x+2)=360](https://img.qammunity.org/2020/formulas/mathematics/middle-school/g18fmw281vwq9tlwhcfdu0ldc2zkka5yp8.png)
Then we can substitute
into
and solve for "x". This is:
![(86x)+(272x+2)=360\\\\358x=360-2\\\\x=(358)/(358)\\\\x=1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/nhosc9ughkuwdxevsn6o5b2nly3izp2kn9.png)