Answer:
it is a 60 30 90 triangle so basically 2y is = x
21² + y² = x²
441 + y² = x²
y = x/2 (2y = x)
441 + x²/4 = x²
4x² = 1764 + x²
3x² = 1764
x = exact is 24.248711306 simplied square root would just be 14√3
2y = 14√3
y = 7√3
exact wouldd be 12.124355653
Answer:
d
Step-by-step explanation:
hope this helps
Answer:
13, i think
Step-by-step explanation:
Answer:
The area of triangle is ![110.10cm^{2}](https://tex.z-dn.net/?f=110.10cm%5E%7B2%7D)
Step-by-step explanation:
It is given that AB=19cm, BC=12cm and ∠B=105°
Now, Area of the triangle ABC=![\frac{1}{2}acsinB](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7DacsinB)
=![\frac{1}{2}{\times}12{\times}19{\times}sin105^{\circ}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%7B%5Ctimes%7D12%7B%5Ctimes%7D19%7B%5Ctimes%7Dsin105%5E%7B%5Ccirc%7D)
=![6{\times}19{\times}(0.965)](https://tex.z-dn.net/?f=6%7B%5Ctimes%7D19%7B%5Ctimes%7D%280.965%29)
=![110.10cm^{2}](https://tex.z-dn.net/?f=110.10cm%5E%7B2%7D)
Thus, the area of triangle is ![110.10cm^{2}](https://tex.z-dn.net/?f=110.10cm%5E%7B2%7D)
Answer:
15.6cm
Step-by-step explanation: