Answer:
B. Metric measurements are based on powers of 10; customary measurements are not.
Step-by-step explanation:
Step-by-step explanation:
LHS= 1 + cot^2A/1+cosecA
=(1+cosecA + cot^2A)/1+cosecA
{By using basic trigonometric theorem cot^2A = cosec^2A - 1}
=(1+cosecA + cosec^2A - 1)/(1+cosecA)
=(cosecA + cosec^2A)/(1+cosecA)
=[cosecA (1+cosecA)]/(1+cosecA)
{Cancelling 1+cosecA}
=cosecA
1/2n - 4 = 5
1/2n = 5 + 4
1/2n = 9
n = 9 * 2
n = 18 <==
c = -8 which means whenever you see a c replace it with -8
d = 2 means the same for 2
and cd means c times d
so
cd + d
is
(-8)(2) + (2) =
-16 + 2 = -14
