42. ABC is a triangle inscribed in a circle withcentre 0. Let a = Z BA

1.	42. ABC is a triangle inscribed in a circle withcentre 0. Let a = Z BAC, where 45° < a < 90°Let ß = BOC. Which one of the following iscorrect?(a) cos B =1- tan2 α1+tanda(b)cos B =1+tan a1-tand a(c)cos B =2 tan a1+tan a(d) sin B = 2 sin a
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42. ABC is a triangle inscribed in a circle withcentre 0. Let a = Z BAC, where 45° < a < 90°Let ß = BOC. Which one of the following iscorrect?(a) cos B =1- tan2 α1+tanda(b)cos B =1+tan a1-tand a(c)cos B =2 tan a1+tan a(d) sin B = 2 sin a

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hbbhjjnbgyyjjvc jujhhvf

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42. ABC is a triangle inscribed in a circle withcentre 0. Let a = Z BAC, where 45° < a < 90°Let ß = BOC. Which one of the following iscorrect?(a) cos B =1- tan2 α1+tanda(b)cos B =1+tan a1-tand a(c)cos B =2 tan a1+tan a(d) sin B = 2 sin a​

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42. ABC is a triangle inscribed in a circle withcentre 0. Let a = Z BAC, where 45° < a < 90°Let ß = BOC. Which one of the following iscorrect?(a) cos B =1- tan2 α1+tanda(b)cos B =1+tan a1-tand a(c)cos B =2 tan a1+tan a(d) sin B = 2 sin a