3. In fig. if Il I m then find value of x
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Answered by
1
Answer:
Degree is not written.
Answer:
60°
Step-by-step explanation:
As 3y and 2y + 25 are alternate angles they must be equal.
3y = 2y + 25
→ 3y - 2y = 25
⇒ y = 25
Hence,
2y + 25 = 2(25) + 25
= 50 + 25
= 75
Since x + 15 and 2y + 25 are opposite angles they must be equal.
⇒ x + 15 = 2y + 25
⇒ x + 15 = 75 ( (from above)
⇒ x = 75 - 15
⇒ x = 60
Hence the measure of x is 60°
Answered by
0
Answer:
Since l∥m, then
3y=2y+25
0
[Alternate ∠s]
⇒3y−2y=25
0
⇒y=25
0
...(1)
Also x+15
0
=2y+25
0
[Vertically opposite ∠s]
⇒x+15
0
=2(25)+25
0
[using (1)]
⇒x+15
0
=50
0
+25
0
⇒x=75
0
−15
0
⇒x=60
0
.(in degrees)
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