Answer:
x=30
Step-by-step explanation:
1 / 2 ( x + 6) = 18
Distribute
1/2x +3 = 18
Subtract 3 from each side
1/2x +3-3 = 18-3
1/2x = 15
Multiply each side by 2
1/2x*2 =15*2
x = 30
Answer:
sin²x
Step-by-step explanation:
we have
(1 − cos x)(1 + cos x)=1-cos²x
Remember that
sin²x+cos²x=1 ------> i-cos²x=sin²x
therefore
(1 − cos x)(1 + cos x)=sin²x
Answer:
x = 
Step-by-step explanation:
the ratio of side to hypotenuse in a right triangle is 1 : 
in this problem we can use 'x' in place of 1 and
in place of
to create a proportion like this:
1/x =
/
cross-multiply to get:
·x = 
x = 
x = 
Answer:
210w
Step-by-step explanation:
brainliest plz
The answer to the first question is B
The second question is B