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pls solve it for me. 16. If'x is a positive acute angle and cosx - -. what is the value of cos ? ? 1

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pls solve it for me.

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16. If'x is a positive acute angle and cosx - -. what is the value of cos ? ? 1 15 2 1 5 3 ) 2 75 4 ) VS 17. If cos @= 2, the positive value of sin ? is 2 ) V7 3) 16 3 4) 18. If sin A = 2. what is the value of cos ZA? izzog li Joubor 2 ) 2 3 ) - 7 4) 2 - 19. If'x is an acute angle, and cos x = =, then cos 2x is equal to 1 ) 6 SA 2) -1 3 ) 2 25 25 4) LA 12 25 0o 20. In the accompanying diagram of a unit circle, the ordered pair (x, y) represents the point where the terminal side of a intersects the unit circle. 2 - QE- (A is the area If @= 1509, what is the value of x? V 3 N 2 1) 1 2 ) - - 2 2 21. In the accompanying diagram of a unit circle, the ordered pair (x, y) represents the point where the terminal side of a intersects the unit circle. partsbru (a CA ARST to th

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