Question

3(tan square 30°)-8(sin square 45°+cos square 30°)=0

Answer 1

Answer:

$3 \times ( \frac{1}{ \sqrt{3} } ) {}^{2} - 8 \times ( \frac{1}{ \sqrt{2} } ) {}^{2} + ( \frac{ \sqrt{3} }{2} ) {}^{2} = 1 - 4 + \frac{3}{4} = \frac{ - 12 + 3}{4} = - \frac{9}{4}$