Answer:
cos 25° = X/11
and
sin 65° = X/11
is this good enough or do you need more workings?
When you see questions with dirrerent scales, find the scale factor first.
Scale factor
= A ÷ A’ = 12 ÷ 4 = 3
Larger flag perimeter = 3 × 16 = 48 units
Answer:
hope this helpw
Step-by-step explanation:
Answer: The function could be y= - 3 cos x
Solution:
One x-intercept is (pi/2,0): We can use a trigonometric function like cosine that has x-intercept (pi/2,0).
The domain of the cosine function is the set of all real numbers.
The maximum value is 3, then the amplitude must be 3: y = 3 cos x
The y-intercept is (0,-3) then it is the functio y = 3 cos x, reflected around the x-axis: y = - 3 cos x
3x - 2y + 4 = 0
-2y = -3x - 4
y = 3/2x + 2...slope here is 3/2. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal of a number, flip the number and change the sign. So the slope we will need is -2/3 (see how I flipped 3/2, making it -2/3...and changed the sign, making it -2/3.)
y = mx + b
slope(m) = -2/3
(4,3)...x = 4 and y = 3
now sub and find b, the y int
3 = -2/3(4) + b
3 = -8/3 + b
3 + 8/3 = b
9/3 + 8/3 = b
17/3 = b
so ur perpendicular equation is : y = -2/3x + 17/3....or 2x + 3y = 17...or 2x + 3y - 17 = 0
