What is the correct way to classify the triangle show below

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

Sin(a)+cos(a)+cot(a)-1=2(csc(x)+1)

The answer that i got was 8/3