Answer:
sqrt(5)
Step-by-step explanation:
Honestly think this person means to find the magnitude of the vector. You can use dot product here, the vector with itself... But that isn't the last step.
v dot v=4+1=5
and so |v|=sqrt(5)
Answer:
307
plzzzz mark me brainly
Step-by-step explanation:
Answer:
X< -1
Step-by-step explanation:
If you subtract the 5 from the 7 leaves you with -2x< 2 and if you divide the negative 2 by both sides makes the -2 cancel itself out and leaves X< -1
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
Answer:
A = 8π cm²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius )
Here diameter = 8 , then r = 8 ÷ 2 = 4
The area of half a circle is then
A =
π × 4² =
× π × 16 = 8π cm²