Pyaar
JF-Expert Member
- Feb 11, 2018
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Sawa
Kama vipi shusha nondo hapa tupate jibu.
SawaJaribu kutimia ceva's theorem.
(sin(DAB)/sin(DAC)) x (sin(DCB)/sin(DCA)) x (sin(DBA)/sin(DBC)) = 1
(sin(78°)/sin(18°)) x (sin(24°)/sin(18°)) x (sin(DBA)/sin(DBC)) = 1Sawa
Kama vipi shusha nondo hapa tupate jibu.
Ebwana eeh! 🫡(sin(78°)/sin(18°)) x (sin(24°)/sin(18°)) x (sin(DBA)/sin(DBC)) = 1
sin78° approx 0.9781,
sin(18°) approx 0.3090
sin24° approx 0.4067
0.9781/0.3090 approx 3.165
0.4067/0.3090 approx 1.316
3.165 × 1.316 approx 4.166
4.166 × sin(DBA)/sin(DBC) = 1
sin(DBA)/sin(DBC) approx 0.24
Let angle DBA = y, then angle DBC = 42° - y
sin(y)/sin(42°- y) approx 0.24
Solving numerically, let's try y = 8°
sin( 8°) approx 0.1392, sin(34°) approx 0.5582
0.1392/0.5582 approx 0.249 (close to 0.24)
So, angle DBA approx 8 and angle DBC approx 34
Angle ADB = 180° - 78° - 8° = 94°
Angle ADC + angle ADB + angle BDC = 360°
Angle BDC = 360° - 144° - 94° = 122°
x = 122°
Mimi math sio mambo yangu kabisa, ila theory naku chapa mapemaI don't remember....
NiceSoln
a + b = 180 (Straight line)
a = 180 -b
Then,
4a = 5b
4(180 - b)=5b
720 - 4b = 5b
720=5b + 4b
720/9 = 9b/9
b = 80
So,
a + 80 = 180
a = 180 - 80
a = 100
a - b =?
100 - 80 = 20.
Hapo kwenye right angle, umecompute vipi? Otherwise attempt iko poa.
Tumechoka ! Au na wewe unataku kupewa majibu ukawafundishe wengine?Challenge ya kufunga siku.. Wakali wa vibox uwanja wenu huu.View attachment 3314290
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