Question

Use a double-angle identity to find the exact value of the expression 2 cos 15º - 1 OB. - 3 OA. 2 13 OC. 13 OD 2 V3 1 OF. OE
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Answer #1

ет 2 оо? 1 - | о. си 29 2c0) 9 – 1 using this identity 2 cm 1- с C) 2x ( с С Зо ©| 2 option F is Соттер . CScanned with CamSc

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