Answer:
15 because 32 - 17 = 15
Step-by-step explanation:
In polar coordinates, we have
From this we can write
If
, then
, so we get
3(y+1)+2y=8
3y + 3 +2y = 8
5y +3 = 8
-3 -3
5y = 5
--- ---
5 5
y=1
Answer:
okay
Step-by-step explanation:
if you want someone to help you you should probably put a question on here lol
Answer:
155°
Step-by-step explanation:
In Δ ABC, let A = x°
By Angle-sum property,
A + B + C = 180°
But, it is given that C = 130°
So, x + B + 130 = 180
B = 180 - 130 - x
B = 50 - x
Since AD and BD are internal bisectors of A and B,
∠ DAB = x/2 and
∠ DBA =
In Δ ADB, by angle-sum property,
∠ DBA + ∠ DAB +∠ ADB = 180°
+ ∠ ADB = 180°
25 + ∠ ADB = 180°
∠ ADB = 180 - 25 = 155°
Hence, ∠ ADB = 155°
