this is about geometry!!!
2006-07-08 21:44:44 · 8 answers · asked by ron h 1 in Science & Mathematics ➔ Mathematics
A + B = 90
B = 3A
A + 3A = 90
4A = 90
A =22.5
B = 90 - 22.5 = 67.5
A= 22.5° & B = 67.5°
2006-07-08 22:03:21 · answer #1 · answered by M. Abuhelwa 5 · 0⤊ 0⤋
A and B are complementary, so A + B = 90 (1)
B is three times A, so B = 3A (2)
Substitute relation (2) in relation (1), you get:
A + 3A = 90
Solve for A:
A = 22.5
2006-07-08 21:48:58 · answer #2 · answered by Anonymous · 1⤊ 0⤋
A + B = 90 ; A and B complentaire
B = 3A ; B is 3 times A
=> 4A = 90 ; A = 22.5, B = 67.5
2006-07-08 21:50:23 · answer #3 · answered by gjmb1960 7 · 1⤊ 0⤋
ast he angles are complementary A + B =90 (1)
but u have mentioned that B=3A
therefore putting this value in (1)
A+3A=90
or 4A=90
orA=90/4
or A=22.5 degrees
and as B=3A, B=3x22.5
=67.d degrees
Ans:A=22.5 degrees
B=67.5 degrees
2006-07-08 22:59:04 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Why not study the textbook? It will teach you reasoning skills which is way too rare. Then perhaps you could succeed in life without always looking for shortcuts. To me, this is what your question is about, not geometry.
2006-07-09 02:14:42 · answer #5 · answered by gtoacp 5 · 0⤊ 2⤋
A + B = 90
B = 3A
A + 3A = 90
4A = 90
A = 22.5
B = 3(22.5)
B = 67.5
A = 22.5°
B = 67.5°
2006-07-09 02:00:26 · answer #6 · answered by Sherman81 6 · 1⤊ 0⤋
Glad you're paying attention in class.
2006-07-08 21:46:56 · answer #7 · answered by Chinese Cowboy 5 · 0⤊ 1⤋
22.5 and 67. 5degrees!!!
2006-07-08 22:19:56 · answer #8 · answered by ramesh raman 1 · 1⤊ 0⤋