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Luiz Inacio Lula da Silva became President of Brazil for a third term. It is the first time since the end of Brazil's 1965-1985 military dictatorship that an incoming leader has not received the yellow-and-green presidential sash from his predecessor. About Brazil Capital: Brasília Currency: The Brazilian real
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
...If 4cos2x - 3 = 0, and (0° > x > 90°), then find the value of 'x'.
If tan θ = (2/√5), then determine the value of cos2 θ
If √3cosec 2x = 2, then the value of x:
If x = (sin 30 ° + cos 30 ° )/sec 60 ° , then find the value of 4x.
If sin3A = cos(5A-30°), then what is the value of A? Given that 3A is an acute angle.
If sin x + cos x = √2 sin x, then the value of sin x - cos x is:
Simplify the given equation:
