Can someone help me solve for which expression?
3 Answers
The base of the triangle is side
Please observe that all of the selections use the angle
Substituting into the
This is the fourth selection.
4th option
Explanation:
Explanation:
Notice how all options involve
Remember the definition of
In the small right triangle on the left,
sin D = h/fsinD=hf
We can solve this for
f sin D = cancelf * h/cancelf
=> color(red)h = color(red)(f sin D)
We now have an expression for
Using the classic formula for the area of a triangle
b=e " " (sidee is our baseb )h = f sin D " " (from above)
we can now replace
A = 1/2 ecolor(red)h
becomes
A = 1/2 ecolor(red)(fsinD)