Evaluate (\(\sin\)45º + \(\sin\)30º ) in surd form

If y = x Sin x, find \(\frac{dy}{dx}\) when x = \(\frac{\pi}{2}\)

Evaluate 1 - (\(\frac{1}{5}\) x \(\frac{2}{3}\)) + ( 5 + \(\frac{2}{3}\))

Given m = N\(\sqrt{\frac{SL}{T}}\) make T the subject of the formula