QUIZ MATHS Pakai cara

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sin a = x

cos a = y

csc a – sec a = √13 /6

(1/x – 1/y)² = 13/36

1/x² + 1/y² – 2/xy = 13/36

(y² + x²)/(xy)² – 2/xy – 13/36

(1/xy)² – 2/xy – 13/36 = 0

36p² – 72p – 13 = 0

(6p – 13)(6p + 1) = 0

yg memenuhi → p = 13/6

1/xy = 13/6

xy = 6/13

sin x cos x = 6/13

sin 2x = 12/13

cos 2x = 5/13

cot a – tan a

= y/x – x/y

= (y² – x²)/xy

= cos 2x / sin x cos x

= (5/13) / (6/13)

= 5/6