Classify point C
1 answer:
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$128.49
<h3>Further explanation</h3><u>Given:</u>
- Tim is painting his storage shed.
- He buys 4 gallons of white paint and 3 gallons of blue paint.
- Each gallon of white paint costs $15.72.
- Each gallon of blue pain costs $21.87.
<u>Question: </u>
How much will Tim spend on the paint?
<u>The Process:</u>
We first calculate the total cost spent on each color of the paint.
Total costs of white paint
Total costs of blue paint
The overall cost of painting is
<u>Quick Steps:</u>
Total costs
Therefore, Tim will spend the total costs to paint his storage shed as much $128.49.
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Keywords: Tim is painting his storage shed, 4 gallons of white paint, 3 gallons of blue paint, total costs, how much will Tim spend on the paint?
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°)