1-cos A + sin A 1+ sin A 2 sin A If y = then 1+ cos A + sin A is equal to A. В. 1- y 1+ y C. D. An expression that can be obtained from 13 sin 20 %3D 4 sin 20 cos 20+ cos 20 cos 20 i. 4 sin 20 +9 sin 20- 5 0 ii. 4 sin 20 (1- cos? 20) +5 = 13 sin 20 iii. 4 sin 20 cos² 20 - 13 sin 20 +5 =0 A. i only B. I and ii C. i and il D. i, ii, and i -17

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