If the sin 90° = 1, then which statement is true? cos 0° = 1, because the cosine and sine are complements cos 90° = 1, because the cosine and sine are supplements cos 0° = 0, because the cosine and sine are complements cos 90° = 0, because the cosine and sine are supplements

Can i get some on 18,20,& 22? or one of them

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12