Answer:
It should be the first on considering that you should not have to square anything. Only if it is addition. In your notes if you square if wouldn't be right
Step-by-step explanation:
Answer:
10 yes 18 no 17 no
Step-by-step explanation:
Hope this helps
Answer:
x = 10
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin60° = 
, then
sin60° = 
= 
= ( cross- multiply )
2x = 20 ( divide both sides by 2 )
x = 10
