Answer:
∠ DFC = 80°
Step-by-step explanation:
See the attached figure.
Since BFE is a straight line so, ∠ BFA + ∠ AFE = 180°
Now, ∠ AFE is given to be 125°.
So, ∠ BFA = 180° - 125° = 55°
Now, AFD is a straight line. So, ∠ BFA + ∠ BFC + ∠ DFC = 180°
⇒ 55° + 45° + ∠ DFC = 180° {Since, ∠ BFC is given to be 45°}
⇒ ∠ DFC = 180° - 55° - 45° = 80° (Answer)
The area is 123.1073415 cm
Answer:
1 1/3 (Decimal: 1.333333)
Step-by-step explanation:
Answer:
<u>x = 6.4</u>
Step-by-step explanation:
Taking the sin ratio of the angle :
- sin 40° = x / 10
- 0.64 = x / 10
- x = 0.64 × 10
- <u>x = 6.4</u>
Combine the x terms:
11x-10=180
Add Both sides by 10:
11x=190
Divide both sides by 11:
X=190/11