Answer:
420
Step-by-step explanation:
Answer:
50 meters per day
Step-by-step explanation:
Answer:
18/10
Step-by-step explanation:
Answer:
-cos^4(x)
Step-by-step explanation:
Step 1: Use the Pythagorean identity : 1=cos^2(x) + sin^2(x)
1-sin^2(x) = cos^2(x)
-1+sin^2(x) = -cos^2(x)
cos^2(x) (-cos^2(x))
Step 2: Factor out common terms cos^2(x)
cos^2(x) (sin^2(x)-1)
Ans: -cos^4(x)
-3 < 0 Because -3 is less than 0.
Hope this helps ;P
