Plzz helpppp meee.... i need the answer and steps really fast ...

Mathematics

1 answer:

blsea [12.9K]3 years ago

4 0

Answer:

R = √2

α = π/4 or 45°

Step-by-step explanation:

R cos(2n + α)

Use angle sum formula:

R [cos(2n) cos α − sin(2n) sin α]

R cos(2n) cos α − R sin(2n) sin α

Match the coefficients:

R cos α = 1

R sin α = 1

Divide:

tan α = 1

α = π/4 or 45°

Solve for R:

R cos(π/4) = 1

R / √2 = 1

R = √2

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ALTERNATIVE METHOD (use which works best for you)

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ArbitrLikvidat [17]

Answer:

I hope it helps you

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