Given that sin
⁡
A
=
9
82
sinA=
82


9

and
cos
⁡
B
=
1
5
cosB=
5


1

, and that angles
A
A and
B
B are both in Quadrant I, find the exact value of
cos
⁡
(
A
+
B
)
cos(A+B), in simplest radical form

step-by-step explanation:

if x = 2 you have to find x to finish the problem

step-by-step explanation:

hjkj

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.