Answer:
4th option
Step-by-step explanation:
given
sinΘ =
and cosΘ =
, then
(
)² + (
)²
=
+ 
= 
=
= 1
showing sin²Θ + cos²Θ = 1
I'm not sure about these answers sorry
Answer:
multiply them all together to get 84 cubic meters.
Step-by-step explanation:
7 times 3 times 4 = 84
You eliminate two equations first then you find one variable, once u figured out one variable plug it into any equation and try to cancel out another variable, youll have two variables in the end and then just plug and u have ur answers
I think there are no solutions but I could be wrong (╥ω╥`)