80°. angle 4 and and 5 are same side interior angles, so they add up to 180°. 180-100=80.
Domain means the input of x-values
example: (4,3) (2,1)
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Domain Domain
Answer:
tanx = 1
Step-by-step explanation:
I assume you mean sinx = cosx
In this case we have to recognize that tanx = sinx / cosx
So if we divide cosx over we can get tanx
So:
Cosx divided by itself gives us 1
sinx / cosx = 1
tanx = 1
Answer:
16/81
Step-by-step explanation:
As the tile is taken and then replaced this means that the probability of the second event is not impacted by the probability of the first (they are independent)
As there are 9 tiles and 4 of them are even, the probability that the first tile drawn is even is 4/9.
There are still 9 tiles and still 4 of them are even for the second tile being drawn so this probability is then also 4/9.
If we want to find the probability of both events we should multiply together these two independent probabilities.
So: 
Answer:
sin B = 15/17
Cos B = 8/17
Tan B = 15/8
Step-by-step explanation: