Answer:
8.3
Step-by-step explanation:use law of cosine
solve equation
substitute
simplify
2p + 21 is what it equals hope it helps and have a great day!
You can multiply a fraction with the same numerator and denominator like 2/2, which is also one (does not change original fraction).
6/9*2/2= 12/18
or any other number
6/9*3/3=18/27