Answer:
<em><u>3:25pm</u></em>
Step-by-step explanation:
2:00PM + (40min + 45min) = 85min
<em>hour= 60min</em>
85 - 60 = 25 , its means the amount of the time is 1hour and 25min
1hr25min + 2hr = they finished at <u><em>3:25pm</em></u>
Answer:
Step-by-step explanation:
Hello
A1 = (B + b) x h / 2
A1 = (8 + 2) x 5 / 2
A1 = 10 x 5 / 2
A1 = 25 cm^2
A2 = L x l
A2 = 6 x 8
A2 = 48 cm^2
A = A1 + A2
A = 25 + 48
A = 73 cm^2
Given:
A music store has the following:
40 trumpets
39 clarinets
24 violins
51 flutes
16 trombones
We will write the following ratios:
trumpets to violins =
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°)
Answer:
B
Step-by-step explanation:
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