Question

sin² 60°+ cos² 45° =?​

Answer 1

Answer:

5/4

Step-by-step explanation:

Answer 2

Answer:

${sin}^{2} {60}^{.} + {cos}^{2} {45}^{.}$

$= ( { \frac{ \sqrt{3} }{2}) }^{2} + ({ \frac{1}{ \sqrt{2} } )}^{2}$

$= \frac{3}{4} + \frac{1}{2}$

$= \frac{6+ 4}{8}$

$= \frac{10}{8}$