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>
90÷5=18 which means she makes $18 every hour.
Answer= $18
184.8 calories :)
the grams are both 100, meaning we can use percentages. banana: 70% of 86 (.7*86=?) is 60.2 calories. yogurt: 140% of 89 (1.4*89=?) is 124.6 calories. 60.2+124.6=184.8 calories
Answer:
-0.7
Step-by-step explanation:
-2n+1.8=3.2
-2n=3.2-1.8
-2n=1.4
n=1.4/-2
n=-0.7
50 fl oz. is the better buy because it cost 0.29 per ounce
