To find the required angle

rb23 Posts: 6, Reputation: 1

New Member

Mar 28, 2010, 08:34 AM

To find the required angle

In ∆ ABC, AD is the altitude from A on BC. If angle B = 45; c > b and
AD = (abc) / 2(c^2 - b^2), then angle A is equal to
a) 30
b) 45
c) 60
d) 75

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