In ΔRST, the measure of ∠T=90°, the measure of ∠S=21°, and ST = 7.7 feet. Find the length of TR to the nearest tenth of a foot.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

Determine which postulate or theorem can be used to prove that lmn =nmo