Drag the tiles to the correct boxes to complete the pairs.
Match the expressions with their solution

a)    

b)

c)

d)

  cos 330° = 1- 2 sin² (165°)

Step-by-step explanation:

Step(i):-

By using trigonometry formulas

a)

cos2∝  = 2 cos² ∝-1

cos∝ = 2 cos² ∝/2 -1

1+ cos∝ =  2 cos² ∝/2

b)

cos2∝  = 1- 2 sin² ∝

cos∝  = 1- 2 sin² ∝/2

Step(i):-

Given

          we know that trigonometry formulas

         1- cos∝ =  2 sin² ∝/2

      Given

put ∝ = 315

     multiply with ' 2 sin (∝/2) both numerator and denominator

Apply formulas

  1- cos∝ =  2 sin² ∝/2

now we get

b)

               put ∝ = 330° above formula

c )

               put ∝ = 315° above formula

d)

     cos∝  = 1- 2 sin² ∝/2

   put      ∝ = 330°

      cos 330° = 1- 2 sin² (165°)

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation:

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~