Answer:
Part 1)
Part 2)
Part 3)
Step-by-step explanation:
Part 1) Find sin(2x)
we know that
we have
Find cos(x)
Remember that
substitute
-----> is positive because angle x belong to the I quadrant
Find sin(2x)
we have
so
Part 2) Find cos(2x)
we know that
we have
so
Part 3) Find tan(2x)
we know that
we have
so
Answer:
11.39
Step-by-step explanation:
-3.86+6.82=2.96
abs(2.96)=2.96
----------------------
4.02-12.45=-8.43
abs(-8.43)=8.43
-----------------------
1(2.96)+8.43=2.96+8.43=11.39
Answer:
31.4 in
Step-by-step explanation:
This is a tricky question,
if you observe the shape carefully, you will notice that if you mirror (flip outward) each curve surface of each quardrant, what you will end up with is a complete circle with a radius of 5 inches.
Hence the combined length of all the curved surfaces is simply the circumference of the circle, given by:
Circumference = 2πr
= 2 x 3.14 x 5
= 31.4 in