Mathematics > 2019 PAPER 1 > 37
BECE/Junior WAEC
What is the third angle of a triangle if the other two are (3x - 20)o and (4x + 10)o?
A.
(210 + 7x)o
B.
(190 - 7x)o
C.
(190 + x)o
D.
(210 - 7x)o
E.
(190 + 7x)o
Answer: B
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