Answer:
28.8
Step-by-step explanation:
A squared plus b squared equals c squared.
Answer:
-61
Step-by-step explanation:
We use the distributive property to distribute 6 to both x and 11. This gives 6x+66=-300. Subtracting both sides by 66 gives 6x=-366. Dividing both sides gives x=-61.
There is no x value as there is no solution. I plugged into desmos cause it didnt make sense at first then it showed me that it has no solution.
We have to evaluate cos(2θ), knowing that θ is in the first quadrant and in standard position P(u,v) = (3,4).
We can picture this as:
We can write the relation:

We now look at the identities to find cos(2θ):

There are many identities for cos(2θ), but this is expressed in the information we already know, so we can solve as:

Answer: cos(2θ) = -7/25
Answer:
m<DCF = 155°
Step-by-step explanation:
m<DCF = m<D + m<E
m<DCF = 72° + 83°
m<DCF = 155°