What is the standard of reasonable doubt in a sexual assault case?

is, evidence that is reasonable, credible and of solid valuefrom which a reasonable trier of fact could find the defendant guilty beyond a reasonable doubt. [Citations.] "[I]f the verdict is supported by substantial evidence, we must accord due deference to the trier of fact and not substitute our evaluation of a witness's credibility for that of the fact finder." " (People v. Snow (2003) 30 Cal.4th 43, 66, 132 Cal.Rptr.2d 271, 65 P.3d 749.) This standard applies whether direct or circumstantial evidence is involved. (Ibid. )