cos 3 0 0 = 2 3 an d cos 4 5 0 = 2 2 cos 3 0 0 ⋅ cos 4 5 0 = 2 3 ⋅ 2 2 = 2 ⋅ 2 3 ⋅ 2 = 4 6
This means the multiplication of the cos of the particular angles
cos ( 3 0 o ) = 2 3 , cos ( 4 5 o ) = 2 2
So, multiplying them together is
= 2 3 ∗ 2 2 = 4 6
The product of cos 3 0 ∘ and cos 4 5 ∘ can be expressed as 4 6 in simplest radical form. This is calculated by multiplying their respective values: 2 3 and 2 2 .
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