For this case we must factor of the following expression:
By law of signs of multiplication it is fulfilled that:
So we have to:
Thus, by factoring we have:
Answer:
Plot points at (0, 0) and (3, 4). Draw a line through the points. What is the slope of your line?
1 answer:
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So.. checking the picture below
we can say y = y, or just do a substitution and end up with
once you know, how long is "x", then you can simply use the cosine of 72° to get "r"
thus
we can say y = y, or just do a substitution and end up with
once you know, how long is "x", then you can simply use the cosine of 72° to get "r"
thus