Answers

2014-02-05T23:08:17+08:00
Ans= 45
sol.
let:
theta1=2x-5
theta2=y
y=2x-5
2x-5+y=90
2x-5+2x-5=90
4x-10=90
4x=100
x=25
substitute:
y=2(25)-5
y=45
theta1 + theta2 =90
45 +theta2 = 90
theta2=45
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