Answer:
A) 2.5
Step-by-step explanation:
20/8 = 2.5
Answer:
see explanation
Step-by-step explanation:
Using sum to product identities
cos x - cos y = - 2sin(
)sin(
) = 2sin( )sin(
)
cos x + cos y = 2cos( )cos( )
Note that
sin10° = sin(90 - 10)° = cos80°
Thus
← cancel 2 from numerator/ denominator
= 
× 
= tan45° × tan35° { tan45° = 1 ]
= 1 × tan35°
= tan35° ← as required
Answer:
x is 64 degrees
Step-by-step explanation:
Since the polygon is a quad we know all the angles add up to 360. So, we can do :
100 + 130 + 66 = 360 - x
296 = 360 - x
Subtract 360 on both sides
-64 = -x
Multiply by negative one on both sides and we get
64 = x
x is 64 degrees
Answer: Surface Area = 16in.
Step-by-step explanation:
So we need to find the area of each side and add them up.
First we find the area of one of the triangular sides: 2*3/2 = 3
Then we multiply it by 4 to accommodate the 4 sides that are the same size: 12
Then we do 2*2 = 4 for the base. We then add those up.
4 + 12 = 16
