Which expression is equivalent to 4a+4/2a * a^2/a+1

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

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

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d