They are used for making the sides of a triangle into a ratio. Sine is opposite of the angle divide by the hypotenuse, cosine is adjacent divided by the hypotenuse, and tangent is the opposite divided by the adjacent. Sine is the y-component, cosine is the x-component, and tangent is the ratio of sine/cosine or can also be considered the slope.
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The matching forms of the numbers are as represented below upon evaluation;
- -(-75) = 75
- -(87) = -87
- -(20) = -20
- -(-20) = 20
- -(12) = -12
- -(-12) = 12
- -(75) = -75
- -(-87) = 87
<h3>Opening up parenthesis</h3>
The given numbers can be simplified by opening up the parenthesis as indicated above in which case,
- The product of 2 negatives equals a positive sign
- The product of ,a negative and positive equals negative.
Read more on parenthesis;
brainly.com/question/25935638
315 / 10 = 31.5
4 and down stay the same,
5 and up round up
31.5 = 32
