Answer:
x=8
Step-by-step explanation:
start by setting angle a equal to angle b
next add 21 to the opposite side
then subtract 2x from the opposite side
finally you're left with x=8
Answer:
it should be the 5th one because it shows defencicy
Step-by-step explanation:
from what i know
Answer:
30
Step-by-step explanation:
pythagoras theorem
x


=900
x=30
Using a calculator: cos 70 deg = 0.342. Note: it sounds as tho' you were given several answer options. Where are they?