Answer:
72
Step-by-step explanation:
The answer is 15 because to the the lenght of the missing number you have to use the Pythagorean Theorem.So first you have to use c^2=a^2 +b^2.
25^2=20^2 + b^2 then 625=400 + b^2. 625-400= 225. So what equals 225. The answer is 15. Hope this helps
Answer:
tan (C) = 2.05
Step-by-step explanation:
Given:
A right angled triangle CDE right angled at ∠D.
Side CD = 39
Side DE = 80
Side CE = 89
We know, from trigonometric ratios that, the tangent of any angle is equal to the ratio of the opposite side to the angle and the adjacent side of the angle.
Therefore, tangent of angle C is given as:
![\tan(\angle C)=\frac{DE}{CD}](https://tex.z-dn.net/?f=%5Ctan%28%5Cangle%20C%29%3D%5Cfrac%7BDE%7D%7BCD%7D)
Plug in the given values and solve for angle C.This gives,
![\tan(\angle C)=\frac{80}{39}\\\\\tan(\angle C)=2.051\approx 2.05(Rounded\ to\ nearest\ hundredth)](https://tex.z-dn.net/?f=%5Ctan%28%5Cangle%20C%29%3D%5Cfrac%7B80%7D%7B39%7D%5C%5C%5C%5C%5Ctan%28%5Cangle%20C%29%3D2.051%5Capprox%202.05%28Rounded%5C%20to%5C%20nearest%5C%20hundredth%29)
Therefore, the measure of tangent of angle C is 2.05.
Equation 1 = 4.12
Equation 2 = 5.099
Equation 3 = 4
Equation 4 = 3
I think the answer is B.