Answer: the answer is (0,4)
Step-by-step explanation:
Hello from MrBillDoesMath
Answer:
[email protected] = - sqrt(7)/ 4
which is choice B
Discussion:
This problem can be solved by drawing triangles and looking at ratios of sides or by using the trig identity:
([email protected])^2 + (sin2)^2 = 1
If [email protected] = 3/4
, the
([email protected])^2 + (3/4)^2 = 1 => (subtract (3/4)^2 from both sides)
([email protected])^2 = 1 - (3/4)^2 = 1 - 9/16 = 7/16
So...... taking the square root of both sides gives
[email protected] = +\- sqrt(7)/ sqrt(16) = +\- sqrt(7)/4
But is [email protected] positive or negative? We are told that @ is in the second quadrant and cos(@) is negative in this quadrant, so our answer must be negative
[email protected] = - sqrt(7)/ 4
which is choice B
Thank you,
Mr. B
Answer:
y = x + 15
Step-by-step explanation:
Find the slope(m) of the line that passes through (2, 17) and (6, 21):
m = 1
Find the y-intercept (b) by substituting x = 2, y = 17, and m = 1 into y = mx + b
Thus:
17 = 1(2) + b
17 = 2 + b
17 - 2 = b
15 = b
b = 15
To write the linear function rule, substitute m = 1 and b = 15 into y = mx + b.
Thus:
y = 1(x) + 15
y = x + 15
Answer:
CD=3(8)-6=24-6=18 Units
Step-by-step explanation:
We can put both in an equation, when we do, x=6
:)