Answer:
I can't decide
Step-by-step explanation:
Answer:
22-5= L
L = 17
Step-by-step explanation:
Answer:
The answer is cosx cot²x ⇒ the first answer
Step-by-step explanation:
∵ cot²x = cos²x/sin²x
∵ secx = 1/cosx
∴ cot²x secx - cosx = (cos²x/sin²x)(1/cosx) - cosx
= (cosx/sin²x) - cosx
Take cosx as a common factor
∴ cosx[(1/sin²x) - 1] ⇒ use L.C.M
∴ cosx[1-sin²x/sin²x]
∵ 1 - sin²x = cos²x
∴ cosx(cos²x/sin²x) = cosx cot²x
Ok I think it means that the length

of the rectangle is 2 m more than is width

...
The area is A=

so:

Solving this equation (using the quadratic formula) you get 2 solutons. The only acceptable is the positive one, i.e.

, the length will then be

.