The diameter of ⊙D is AC. The measure of ∠B is x ° and the sum of the measures of ∠A and ∠C is y°

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

Through non-collinear points there is exactly one plane.

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.