Trigonometric EquationHard
Question
The sides of a triangle are sinα, cosα and 
for some 0 < α < 
. Then the greatest angle of the triangle is
for some 0 < α < . Then the greatest angle of the triangle isOptions
A.60o
B.90o
C.120o
D.150o
Solution
Greatest side is 
, by applying cos rule we get greatest angle = 120o.
, by applying cos rule we get greatest angle = 120o. Create a free account to view solution
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