Page 148 - Engineering
P. 148
ﺍﳌﺜﻠﺜﺎﺕ ١٣٥
ﻣﺴﺎﺋﻞ ﻏﻴﺮ ﻣﺤﻠﻮﻟﺔ
) (١ﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ AED ،و ABCﻣﺴﺘﻘﻴﻤﺎن.
ECD = y ، EAB = x ،AB = BE = EC = EDﻣﺎ ﻗﻴﻤﺔ x
ﺑﺪﻻﻟﺔ y؟
D
E
x B y
A C
)ب( x = 60 − 3y )أ( x = 60 − 2y
)د( x = 60 − 3 y )ج( x = 60 − 2 y
2 3
) (٢ﰲ اﻟﺸﻜﻞ اﳌﺮﻓﻖ،BRC = 19° ،BQ = QR ،BC QR ،
.BRQ = 52°ﻣﺎ ﻗﻴﻤﺔ x؟
A
x
BC
)د( 43 Q 19° )أ( 20
)ج( 33 52°
R
)ب( 23
