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11. Nilai dari frac sin 255 ° +sin 45 ° cos 435 ° +cos 225 ° adalah . . . . a.-2 b. - square root of...
5 months ago
Q:
11. Nilai dari frac sin 255 ° +sin 45 ° cos 435 ° +cos 225 ° adalah . . . . a.-2 b. - square root of 3 c. -1 d. 1/3 square root of 3 e. square root of 3
Accepted Solution
A: