9514 1404 393
Answer:
Step-by-step explanation:
The y-intercept is where the line crosses the y-axis. This graph has a y-intercept of 4. The point coordinates there are (0, 4).
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The slope is the ratio of rise to run. It is convenient to identify places where the graph crosses grid intersections. This graph has a rise of 2 units for a run of 1. So, the slope is 2/1 = 2.
The slope is 2; the y-intercept is 4.
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 , then
sin²x = 1 - cos²x and cos²x = 1 - sin²x
Consider the left side
← expand numerator/denominator using FOIL
=
=
=
=
= cot²A = right side , thus proven