Answer:
the reference angle is given by 
sine = negative
cosine = positive
tangent = negative
Step-by-step explanation:
We have been given the angle 
The angle lies in Quadrant IV. Hence, in order to find the reference angle, we can subtract this angle with 
Therefore, the reference angle is given by
In Quadrant IV, cosine and secant functions are positive and rest trigonometric functions are negative.
Thus, we have
sine = negative
cosine = positive
tangent = negative
Answer:
25.
Step-by-step explanation:
5 ft 7 in = 5.583 ft.
We have 2 similar triangles here.
If h is the height of the tree, then:
h / 5.583 = 18/4
h = 18*5.583/4
h = 25.12 ft
It is false that the area of a person's yard can be measured in cubic feet. It is always measured in square feet, because cubic feet add another dimension, which is height, and height is not measured in a yard.
3:9 You may be asking "THAT'S IT?" but yeah thats all you have to do. Not for all problems thought
3 1/3 10/3
---------- = ----------- = (10/3)*(1/4) = 10/12 = (2*5)/(2*6) = 5/6
4 4
