Is the cosine rule correct or the sine rule?

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute