please use my image as a reference (figure not drawn to scale).
AB is a straight line and the angle of a straight line = 180°
so that means , solve for :
combine like-terms
°
if you want to make sure of the answer, plug in in the equation:
Answer:
pm = 4
M is the mid point of PQ which means that pm = mq
so MQ = 4
PQ = PM + MQ
= 4 + 4
= 8
Solve this as you would an equation that does not involve trig. Don't let the trig scare you. If you had to solve 2x+8=0, the first thing you would do is factor out the common 2. In our equation, we have a common cos theta. I'm going to use beta as my angle. When we factor out beta, here's what we have.
. The Zero Product Property tells us that at least one of those factors has to equal zero. So we set them both equal to zero and solve. Let's get the equations first, then we will need our unit circle. First equation set to equal zero is
. On our unit circle, cos is the value inside the parenthesis that is in the x position within our coordinate. Look at all those coordinates as you go around the unit circle once (once around is equivalent to 2pi). You will find that the the cos is 0 at
. The next equation is
. Move the 1 over by subtraction and divide by 2 to get
. Same as before, go around the unit circle one time and look to see where the coordinate in the y place is -1/2. Sin corresponds to the y coordinate. You will find that sin is -1/2 at
. And there you go! Trig is so much fun!!!
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▹ Answer
<em>1. Sampling error</em>
▹ Step-by-Step Explanation
A sampling error is an error in statistics. This means that not the whole population is given a chance to be sampled, which results in this error.
Hope this helps!
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Brainliest is greatly appreciated!
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Answer:
D
Step-by-step explanation:
the ratio is 4:1 on children to childcare workers not the other way around