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Time | Transcript |
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00:00 - 00:59 | this person we have been given that in triangle ABC is equal to 3 is equal to 4 cm equal to b and e trisect the side BC if angle A is equal to theta then cos squared theta is divisible by 2 3 5 and never takes a triangle decision let this is a triangle D and e trisect the side BC point and this point This is this is time and this is |

01:00 - 01:59 | this is see this is a let this is D and this is me now we have given that he is equal to means this time this side is equal to this points tricet that this is equal to a b is equal to 1 this is also equal to 1 and this is also equal to 1 now be is this is Angle B Road opposite side is b b is equal to this is b is equal to four this is a is equal to 3 and opposite side of angle C is small c so this will be equally to this is be this is angle C now we have given that dab dab |

02:00 - 02:59 | this angle is equal to M now first of all we have given that we will take in triangle ABC is equal to X square + c square minus b square why you will be equal to be put value where this is a is 9 a square is 9 + this is 4 - message b square is 16 by 2 into 3 into 2 equal to 3 minus 3 minus 3 by this is Puran 23 and 32 into 3 into 2 cancel out |

03:00 - 03:59 | film equal to minus 1 by 4 as we will take in triangle ABC is a triangle we will take cos B cos b is equal to minus 1 by 4 is equal to this is let this is equal to X let this site is equal to will take one is square beside is one we will take one a square is equal to square minus opposite side Square x square y 2 into 1 into 2 into |

04:00 - 04:59 | this is cancel out this can be written as - X square + 5 is will be equal to minus 1 is equal to X and value of access root this is the value of x in triangle in triangle abc find the angle C is equal to a square + b square minus C square Y2 in to be will be equal to 9 + 16 - 4 by 2 into 3 into this will be equal to 21 vi 2 into 3 into 4 |

05:00 - 05:59 | 7 x 7 why it is equal to 7 by 8 this is the angle Kosi movie find the value of cos C now let this is equal to why we will take in triangle abc find the value of Y in triangle abc find the value of Y in triangle this will be equal to is equal to 7 by 8 is equal to square square + 1 x square minus y square square + 1 x square - |

06:00 - 06:59 | y square Y into 4 into one this will be equally to this is cancel out 16 17 17 + Y square 17 minus y square is equal to 7 y square is equal to 10 while value of Y is equal to root and this is the value of Y we find the value of cos theta in triangle dishes ETA this is apps by and bases side opposite side will take in triangle a triangle |

07:00 - 07:59 | l y using possible this will be equal to X square + Y square x square + Y square - 1 is square Y to x y theta value of x is equal to root 6 on this is 6 plus 10 - 1 by 2 into root 6 into root 10 theta will be equally to this is 16 15152 into this is route 60 this can be written age 15 2 into root 15 so this will be |

08:00 - 08:59 | root 15 why we will find the now we will take a right angle triangle that this is a right angle triangle angle theta theta prove that cos theta is equal to dash by hypotenuse is 15 and hypotenuse is for now we find the perpendicular perpendicular is equal to square minus root 15 square this is equal to 1 now you will find port theta cot theta is equal to days Why this Why perpendicular so this will be equal to root 15 by 1 review |

09:00 - 09:59 | find the value of cot square theta so this will be equal to 15 value of cot square is equal to 15 now we will check 3 is divisible by value of cot square theta is divisible by 15 is divisible by 3 and 5 This is our answer |