Answer:
Step-by-step explanation:
sin(2x) = 2 sin(x) cos(x) cos(2x) = cos2(x) – sin2(x) = 1 – 2 sin2(x) = 2 cos2(x) – 1. Now I am not sure if this is right but I remember another similar formula. Here is the correct formula cot x = cos x / sin x
2 ) ( sin² x + cos² x ) / cos x = sec x
1/cos x = sec x
sec x = sec x
cos² x + sin² x = 1
Answer:
26 This is perimeter
Step-by-step explanation:
Perimeter= Add up all the outside numbers
Area= Length x width
Im pretty sure it is 109 tiles when it is rounded up because when its not rounded up it is 108.97 tiles.
When you're working with units of measure, the prefix 'kilo...'
almost always means '1,000'.
1 kilometer means 1,000 meters
322 (kilometers) per hour means 322 (1,000 meters) per hour.
322 (1,000 meters) = 322,000 meters
Does that help a little bit ?