Csc x · sec x - tan x =
= 1 / sin x · 1 / cos x - sin x / cos x =
= 1 / sinx cos x - sin² x / sin x cos x =
= ( 1 - sin² x ) / (sin x cos x) =
= cos² x / ( sin x cos x ) =
= cos x / sin x = cot x
4x(5x3)=(4x5)x3 the associative property basically just moves the parentheses.
√5m / √5n =
(√5m * √5n ) / (√5n * √5n)
= (√(5m * 5n) ) / (5n)
= (√(25m * n) / (5n)
= √25 * √(m * n) / (5n)
= 5 * √(m * n) / (5n)
= √(m * n) / n
Answer:
C
Step-by-step explanation:
the Sq root for 156 HAS to be a # between 12 and 13.
12+ (13-12)/2
12+ 1/2
12.5
