We know that
if sin A=cos B
then
angle A and angle B are complementary angles
so
A+B=90°
in this problem
(x+21)+<span>(2x+21)=90-------> 3x+42=90-------> 3x=48-----> x=16</span>°
Answer:
The answer is B.

Step-by-step explanation:

Just multiply the numbers by 1.25

so the height is 15 in
and base is 7.5 in
goodluck
Answer:
The growth rate of Plant A is not proportional
because the line is not straight.
The growth rate of Plant B is proportional
because when the data is graphed on the
coordinate plane, the line formed is a straight
line that passes through the origin.
Step-by-step explanation:
i hope this helps if not im am sorry