If sinα=cosß it means that ß=90-α. This also means that α+ß=90 so we can say:
4k-22+6k-13=90
10k-35=90
10k=125
k=12.5°
...
The above identity comes up a lot, and is one worth committing to memory for sure.
sinα=cos(90-α) or vice versa cosα=sin(90-α)
A word problem? Then i think it should be negative six divided by eleven-thirds equals negative eighteen-eleventh’s.
The answer is A, hope this helps
Answer:
answer is a
Step-by-step explanation:
look at picture