Answer:
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Step-by-step explanation:
Actually those 4 angles are equal to 110 because those are vertical angles
Answer:
See below ~
Step-by-step explanation:
Identities :
- cot x = cos x / sin x
- sin²x + cos²x = 1
Changing the Left Hand Side (LHS) :
- 1/cot x + cotx
- 1/(cos x / sin x) + cos x / sin x
- sin x / cos x + cos x / sin x
- Take (sin x)(cos x) as the LCM (Least Common Multiple)
- sin x (sin x) + cos x (cos x) / (sin x) (cos x)
- sin²x + cos²x / cos x sin x
- 1/cos x sin x
- Equal to the RHS
For this case what you must do is to determine the value of r of the given equation:
A = pi * r ^ 2.
Clearing the value of r we have:
r = root (A / pi)
Note that r has two roots:
r1: = + root (A / pi)
r2: = - root (A / pi)
In this case we must ignore the negative root.
Answer:
The formula to find r is
r = root (A / pi)
3x + 4y = 16 Subtract 4y from both sides. Put brackets around the 2 terms on the right.
3x + 4y - 4y = (16 - 4y)
3x = (16 - 4y) Divide by 3
Answer That's B.
