For this pair of figures, state whether they are similar or not similar. Show or explain how you know. B'
21
45°
12
30°
105°
15
A
12
105°
15
45°
B
30°
21
С

Rena used the steps below to evaluate the expression , when . step 1: substitute into the expression. step 2: simplify the parentheses. step 3: evaluate the power to a power. step 4: use reciprocals and find the value. in which step did rena make the first error?