Answer:
Option 2: ![\sin(30)=\frac{1}{2}](https://tex.z-dn.net/?f=%5Csin%2830%29%3D%5Cfrac%7B1%7D%7B2%7D)
Step-by-step explanation:
Given:
From the triangle shown below;
A triangle QRS with angle QRS = 90°, ∠QSR = 30°.
Side QR = 5, SQ = 10 and RS = 5√3
Now, we know from trigonometric ratio that,
![\sin (A) = \frac{Opposite\ side}{Hypotenuse}](https://tex.z-dn.net/?f=%5Csin%20%28A%29%20%3D%20%5Cfrac%7BOpposite%5C%20side%7D%7BHypotenuse%7D)
Here, opposite side of angle QSR is QR and Hypotenuse is the side opposite angle QRS which is SQ. Therefore,
![\sin(\angle QSR)=\dfrac{QR}{SQ}\\\\\\\sin(30)=\dfrac{5}{10}\\\\\\\sin(30)=\dfrac{5}{2\times 5}=\dfrac{1}{2}](https://tex.z-dn.net/?f=%5Csin%28%5Cangle%20QSR%29%3D%5Cdfrac%7BQR%7D%7BSQ%7D%5C%5C%5C%5C%5C%5C%5Csin%2830%29%3D%5Cdfrac%7B5%7D%7B10%7D%5C%5C%5C%5C%5C%5C%5Csin%2830%29%3D%5Cdfrac%7B5%7D%7B2%5Ctimes%205%7D%3D%5Cdfrac%7B1%7D%7B2%7D)
Therefore, the value of sine of 30° is one-half. So, second option is correct.
Answer:
What do you mean by a "Good estimate"? There's no picture or questions.
Step-by-step explanation:
Answer: 3cm
Explanation:
We can use Pythagorean’s theorem to find that other side:
a^2 + b^2 = c^2
a^2 + 4^2 = 5^2
a^2 = 25 - 16
a^2 = 9
a = 3
Therefore, the other side is 3cm
Answer:
B. earned
this an example of earned income