Question 4 (4 points) (07.01 MC)
If the sin 30° is 1 over 2, then the cos ° = . (4 points)

a
60° ; 1 over 2

b
30° ; square root 2 over 2

c
60° ; square root 3 over 2

d
30° ; 1

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Step-by-step explanation:

1 over 2

Step-by-step explanation:

what are ur choices?

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)