Answer:
D' = (5, 2)
Step-by-step explanation:
Try to join D and the origin using a line. Counterclockwise means in an opposite direction of rotation of the clock hands. So draw another line towards the right which is perpendicular to the previous line to fine the answer. Remember the length of the lines should be equal.
Just use quiz lit and it’ll give you all the answers you need for your answers
5 i think because 15 divided by 3 equals 5 but idek
Answer:
cos Ф = 11/12
Step-by-step explanation:
Given that:
sinФ = 
Putting in Pythagoras theorem:
(
)^2 + cos^2 Ф = 1
23/144 + cos^2 Ф = 1
Subtracting 23/144 on both sides:
cos^2 Ф = 1 - 23/144
By taking LCM
cos^2 Ф = (144 - 23)/144
cos^2 Ф = 121/144
Taking square root on both sides we get:
cos Ф = 11/12
I hope it will help you!