Pls answer this simple question for

In triangle opq right angled at p op=7cm, oq-pq=1 determine the values of sinq and cosq

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.