標題:
1996 ce maths mc 52,22,34
explain 1996 ce maths mc 52,22,34 plz show steps 更新: sorry , not 52 , is 54!!!
最佳解答:
22. 2sin x + 3cos x = 0==> 2tan x + 3 = 0==> tan x = -3/2==> x = 123.69°==> x = 123.69° * π / 180° ? (π rad. = 180°, out of syllabus now)==> x = 2.16 rad (C) 34. The required prob. 2/10 * 1/9= 1/45 (B) 54. OB = 3AB = 2√(3^2 - 2^2) = 2√5 (B)
其他解答:
why is 2.16, i cant get this answer|||||圖片參考：https://s.yimg.com/rk/HA00934399/o/142247297.jpg i hope it can help you!!
1996 ce maths mc 52,22,34
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- Canon EF 24-105mm f4.0L IS USM VS Canon EF 24-70mm f2.8L USM@1@
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發問:explain 1996 ce maths mc 52,22,34 plz show steps 更新: sorry , not 52 , is 54!!!
最佳解答:
22. 2sin x + 3cos x = 0==> 2tan x + 3 = 0==> tan x = -3/2==> x = 123.69°==> x = 123.69° * π / 180° ? (π rad. = 180°, out of syllabus now)==> x = 2.16 rad (C) 34. The required prob. 2/10 * 1/9= 1/45 (B) 54. OB = 3AB = 2√(3^2 - 2^2) = 2√5 (B)
其他解答:
why is 2.16, i cant get this answer|||||圖片參考：https://s.yimg.com/rk/HA00934399/o/142247297.jpg i hope it can help you!!
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