Cos(35) = x/6
or 6 * cos(35) = x
        
             
        
        
        
This seems like a concept you’re going to learn and use so I’ll do a problem per section and explain. 
Well basically this is a concept: if it’s a negative exponent it’s just 1/number^exponent. 
So for example: 
#1. 1/(10)^2 = 10^-2 
The standard notation: 
#9: You know that 1/(10)^3 you could either put it in a calculator or realize that you take the number 1, and move the decimal to the left three times. 0.001 would be the answer. 
Scientific notation: 
combines these topics. Let’s take #17. 0.025. Scientific notation means you write it as a number multiplied by 10^? So let’s see how many places you can move the decimal to get a number without the zeros. 
0.025 => move it two places to the right. So that’s 2.5. Now 2.5 multiplied by what 10^? Would give you 0.025? It would be 10^-2. So your answer would be 2.5 x 10^-2.
For all of these, use your knowledge of the power of tens and dividing by tens! ^^ you got this. Let me know if you need help after this explanation.
        
             
        
        
        
Answer:

Step-by-step explanation:




 
        
             
        
        
        
<h2>
Hello!</h2>
The answer is: Angle B is 30°
<h2>
Why?</h2>
Since we know that both sides, a and b are equal to 2, and angle A is equal to 30°, we can conclude that angle B is also equal to 30°. Also, we can know that the other angle (C) will be equal to 120° since the sum of all the angles in a triangle will be always equal to 180°.
Have a nice day!