Take the formula for the area of a triangle, whose base measures b and its corresponding height measures h. So, the area of ABC is
b · h
Area = ———— (i)
2
There is also a right triangle in the picture, in which h is the length of the opposite leg to the angle Â, and c is the length of the hypotenuse. So, you can compute the sine of Â:
length of the opposite side to Â
sin  = ——————————————————
length of the hypotenuse
h
sin  = ——
c
Then,
h = c · sin  (ii)
Now, substitute that into (i) for h, and you get
b · (c · sin Â)
Area = ————————
2
1
∴ Area = —— bc · sin  ✔
2
Answer: option A) A = 1/2 bc sin Â.
I hope this helps. =)
Tags: <em>triangle area length base height sine sin internal angle trigonometry plane geometry</em>
Answer:
-8, 3
Step-by-step explanation:
Reflections formula
Y-axis (-x, y)
X-axis (x, -y)
Answer:
$137.40
Step-by-step explanation:
The markup will be 0.60($229), or $137.40
The <u>possible rational zeros</u> of <u>polynomial function</u> 
could be only among the <u>divisors</u> of the <u>free term</u> of this polynomial function.
The free term is 20 and the divisors of 20 are:
Answer: correct choice is C
Step-by-step explanation:
here's the solution,
in the given figure , sum of all angles formed with O measures 360°
because, it forms a complete angle
so,
=》mPOQ + mQOR + mROS + mSOT + mTOP = 360°
=》mPOQ + mQOR + mROS + mSOT + mTOP = (90° × 4)
=》mPOQ + mQOR + mROS + mSOT + mTOP = 4 × right angle
(cuz.. right angle = 90°)
