Answer:
√2/2
Step-by-step explanation:
sin105° - sin15° = sin(105° - 15°)
sin(105° - 15°) = sin(90°)
sin(90°) = √2/2 (Unit circle)
Alternatively, just plug it into your calc to calculate your final answer.
[tex]\frac{\sqrt{2}}{2}[/tex]
PLATO