Evaluate each of the following:sin2 30° + sin2 45° + sin2 60°+

1.	Evaluate each of the following:sin2 30° + sin2 45° + sin2 60°+ sin2 90°
Answer» sin²30° + sin²45° + sin²60°+ sin²90° = \((\frac{1}2)^2\) + \((\frac{1}{\sqrt2})^2\) + \((\frac{\sqrt3}2)^2\) + (1)² ^{= \(\frac{1}4\) + \(\frac{1}2\) + \(\frac{3}4\) + 1 =}^{\(\frac{5}2\)}

Evaluate each of the following:sin2 30° + sin2 45° + sin2 60°+ sin2 90°

Answer»

sin²30° + sin²45° + sin²60°+ sin²90°

= \((\frac{1}2)^2\) + \((\frac{1}{\sqrt2})^2\) + \((\frac{\sqrt3}2)^2\) + (1)²

^{= \(\frac{1}4\) + \(\frac{1}2\) + \(\frac{3}4\) + 1 =}^{\(\frac{5}2\)}