Answer:
see explanation
Step-by-step explanation:
Using the sum/ difference → product formula
cos x - cos y = - 2sin( 
)sin (
)
sin x - sin y = 2cos ( )sin ( )
Given
(cosA - cosB)² + (sinA - sinB )²
= [ - 2sin(
)sin(
) ]² + [ 2cos( )sin( ) ]²
= 4sin² ( )sin² ( ) + 4cos² ( )sin² ( )
= 4sin² ( )[ sin² ( ) + cos² ( ) ← sin²x + cos²x = 1
= 4sin² ( ) × 1
= 4sin² ( ) = right side ⇒ proven
1. 90 2. 8000 3. 500 4. 200,000
Answer:
area = 18x² + 63x + 55 square units
Second-degree trinomial.
Step-by-step explanation:
area = (3x+5)(6x+11) = 18x² + 63x + 55 square units
Second-degree trinomial.
Answer:
Parallel :)
Step-by-step explanation:
thats the tea sis.
The function is
.
This means that as we get from 1 to 2, we have the following values:
, and
.
Similarly, if we check x=3, we have
.
We can see that as x changes by 1 (with greater values), y increases by a factor of 12.
Answer: multiply by 12
