Answer: The number of sides of the base of a prism and the number of lateral faces is equal.
Step-by-step explanation:
Answer:
a)
b)
c)
d)
cos 330° = 1- 2 sin² (165°)
Step-by-step explanation:
<u><em>Step(i):-</em></u>
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
<u><em>Step(i):-</em></u>
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°)
Are they connected? they are not they they cant connect at anytime so they are paralel. <span />
Expand out, this literally just wants you to multiply everything by -1.
so 7*-1 = -7
-c*-1 = c
thus putting them together to get -7+c which is just c-7
Answer:
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