Answer:
It's 4800, just multiply 60x80 bc the population is 80x larger than the sample of 100
Answer:
cos (A+B+C)
Step-by-step explanation:
as A,B,C, are triangle we have A,B and C as 180
cost
Answer:
Step-by-step explanation:
we know that
The surface area of the square pyramid is equal to the area of the square base plus the area of its four triangular faces
so
we have
substitute
Answer:
sin18/cos72= sin(18) sec(72)
Step-by-step explanation:
rewrite it as a product: sin(18)/1 * 1/cos(72)
Divide sin(18) by 1 and rewrite 1/cos(72) as sec(72): sin (18) sec (72)