3∅ can be rewritten as (2∅+∅)
sin(3∅) = sin(2∅ + ∅<span>)
Opening brackets on the right hand side;
= sin2</span>∅ cos ∅ + cos2∅sin<span>∅
</span><span>This simplifies to;
= 2sin</span>∅cos^2∅ + sin∅ (1- 2sin^2∅<span>)
= sin</span>∅ (2cos^2∅ + 1 - 2sin^2∅<span>)
= sin</span>∅ (2(1 - sin^2∅) +1-2sin^2∅<span>)
= 3sin</span>∅ - 4sin^3<span>∅</span>
Answer:
y = (ax)2
y = 2ax
divide both sides by 2a to make x the subject of the formula.
y/2a = 2ax/2a
x = y/ 2a
hope this was helpful,thanks
14400 quarts because there are 4 quarts in a gallon which means you would multiply 3600 by 4 to get 14,400
8 out of the 12 tiles are blue, right? The blue tiles are 8/12 of the whole mosaic. Divide the top and bottom by 4 to get 2/3
