Answer:
height is 4ft.
Step-by-step explanation:
I used pathagorus theorem .All explaination is in the pic below.
Answer:
Step-by-step explanation:
The rule for 180 and 180 degree rotation is this (x,y)→(−x,−y)
Answer:
9x
Step-by-step explanation:
Use a calculator.
L=2piR(m/360). so your leangth will equal 2×pi×radius×your angle degree over 360°. hope that helps
( 2 sin x cos x )` = ( 2 sin x )` cos x + 2 sin x ( cos x )` =
= 2 cos x cos x + 2 sin x *( - sin x ) =
= 2 cos² x - 2 sin² x = 2 ( cos² x - sin² x ) = 2 cos ( 2 x )
Another way ( using trigonometric identities first ):
2 sin x cos x = sin ( 2 x )
( sin ( 2 x ) )` = 2 cos ( 2 x )
