<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
Look at the picture.

The base of the ladder is 6.47 feet from the house.
Answer:
B
Step-by-step explanation:
Since there are 100 squares and you shaded 45 that is 45/100 which is equal to 45%
3:5.....added = 8
3/8(40) = 120/8 = 15 m <== one piece
5/8(40) = 200/8 = 25 m <== the other piece