<span>sin 90° = 1
</span>
cos 0° = 1
There's a simple formula : <em>sin θ = cos (90°- θ)</em> or <em>cos θ = sin (90°- θ) </em>
So : cos 0° = sin (90° - 0°) = sin 90° = 1
Multiple each number I think
4/5 because 8/10 is equal to 4/5 which is the simplest form<span />
Answer:
i dont know
Step-by-step explanation:
it will be 2 hours
