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Swedish Mathematical Competition
1990 Swedish Mathematical Competition
3
sin x + sin a >= b cos x
sin x + sin a >= b cos x
Source: 1990 Swedish Mathematical Competition p3
April 2, 2021
inequalities
algebra
trigonometry
Problem Statement
Find all
a
,
b
a, b
a
,
b
such that
sin
x
+
sin
a
≥
b
cos
x
\sin x + \sin a\ge b \cos x
sin
x
+
sin
a
≥
b
cos
x
for all
x
x
x
.
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