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Pan African
2000 Pan African
1
Trig Equation
Trig Equation
Source: Pan African 2000
October 3, 2005
trigonometry
Problem Statement
Solve for
x
∈
R
x \in R
x
∈
R
:
sin
3
x
(
1
+
cot
x
)
+
cos
3
x
(
1
+
tan
x
)
=
cos
2
x
\sin^3{x}(1+\cot{x})+\cos^3{x}(1+\tan{x})=\cos{2x}
sin
3
x
(
1
+
cot
x
)
+
cos
3
x
(
1
+
tan
x
)
=
cos
2
x
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