Answer with Explanation:
Keep in mind these trigonometric Identity:
1. Cos²x - Sin² x= Cos 2 x
2. Cos 2 x = 2 Cos²x-1
3. Cos 2 x = 1 - 2 Sin²x
Now, Coming to the Problem
1 + Cos (18 x)
= 1 + Cos (2 × 9 x)
= 2 Cos ² (9 x)→→→ Cos (2 × 9 x)= 2 Cos² (9 x) - 1
So if the towns are 7cm apart and 1cm is equal to 500000, the. you need to times 500000 by 7 to get the actual distance, i hope this helps.
Answer:
thats about like ummm 69?
Step-by-step explanation:
Answer:
x=5
Step-by-step explanation:
since the 2 base angles are the same, we can assume that the sides opposite to them are equal, meaning that this is an isosceles triangle:
5x-8=2x+7
3x=15
x=5
(if u need more help on how i solved for x just ask in the comments, i will try my best to help)
hope this helped a bunch, brainliest plz! :)
Answer:
C
Step-by-step explanation:
The formula is πD, since D is 6, it is C, 6π