Question

en contrar el valor de la expresion trigonometrica 1-sen²30°

Answer 1

1-sen²30°

sen30° = $\frac{1}{2}$

$1- sen^{2}30 = 1-( \frac{1}{2} ) ^{ ^{2} } = 1- \frac{1}{4} = \frac{4-1}{4} = \frac{3}{4}$