The answer is X= -4 or x = -6
This question is incomplete but if you are asking for the angle measure then sin (10) is 0.1736481777
Answer:A
Step-by-step explanation:

<u>Figure - 1</u> :
Let the missing side as " n "

Therefore the sides will be proportional,
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<u>Figure - 2</u> :
Let the missing side as " m "
The Triangles are similar, therefore their sides will be proportional.
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Answer:
x = 45
Step-by-step explanation:
We know that the sum of (x+30) and 75 are vertical angles so they are equal
x+30 = 75
Subtract 30 from each side
x+30-30 = 75 -30
x = 45