Use of "As to" in spoken English

 As to:-

(About) / से संबंधित/ के बारे मे।

(Sentence + As to + how/what...... + Sentence)

Example:-

1.He is advising me as to how to start a business.

2. There is some doubt as to whether the information is accurate.

3.I am in a quandary as to be how to deal with this problem.

4. He was uncertain as to which road to take.

5.There  is no decision as to  when the work might start.

6. Police are baffled as to how the thief ran away.