Answer:
BD=AD-AB=6-4=2
Step-by-step explanation:
You have a line segment AD that measures 6 units
AB is part of it and it is 4 units
There is only one part left of AD and it is BD so you just find what's left of 6 if 4 is already spoken for.
72, 80, and 90 are all numbers that fit the rule
Answer:
sin^2α
Step-by-step explanation:
I will just pose x instead of alpha here to make things simpler

we know that sin^2x = 1 - cos^2x so...


we can rewrite using trigonometric identities (tan = sin/cos)...
