loserlia1 loserlia1

20-11-2021
Mathematics

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Double angel identity

Double angel identity class=

Respuesta :

Аноним Аноним

20-11-2021

Answer:

Step-by-step explanation:

(a) Use Cos 2A = cos^2 A - sin^2 A.

So A = 2*37 = 74 degrees.

(b) B = 2*2x = 4x.

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