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LHS = RHS Transcript

Time | Transcript |
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00:00 - 00:59 | hello everyone send this question we have to show that equation 1 is equivalent to 1 and equation to sequel to to so let me just right what is our equation 1 question of question -10 degree 1015 degree and 75 degree and 10 degree and have to prove it is equal to 1 so in this question we can say that that this and this is forming 1090 and this and this is forming 1090 and we know that cot theta sorry cot cot theta equals to 10 90 minus theta or 10 aur got 90 minus theta or Court |

01:00 - 01:59 | 90 - theta = 2 sin theta and we also know that tan theta equals to 1 upon cot theta and my service up so that means we can use this formula here and we can write this 10 10 degree as cot 90 - 10 and we can write this 1015 as Court 90 - 15 and this 1075 and 1080 as it is far from here we can so it will become cot 10 degree and it will become hot 75 degree and it will become 1075 han 1080 so here from this formula we can write this quote 10 as one upon |

02:00 - 02:59 | and 10 and Cos 75 one upon and 7510 7580 as it is I am sorry this court 90 - 10 will become 80 degree it will be a 300 from here can 7575 cancel soft and this and this cancels out so the value of this equation is one has proved a second portion is sorry second question is 942 degree equal to sec 48 + cos 42 Kaushik 48 = 22 so here we know that sin or cos 90 - |

03:00 - 03:59 | theta sin theta and sec 90 minus theta equals to cos theta that means we can write the sin42 was cos 90 - 42 and we know that sec theta is equals to 1 upon cos theta so it will become one of Cos 48 + cos 42 so it will be as a test and Cos 48 hours from this Greater Noida sec 19 - 48 or we can write this cause 42s from this formula we can I discourse 42s one upon sec |

04:00 - 04:59 | 42 Satish cos 90 - 42 will become cos 48 upon cos 48 + sec 90 - 48 is SEC 42 upon it is a this and this and this and this can cause of and we have 1 + 1 = 22 Francis to enhance proof |

**Review of some terms**

**Measure of an Angle**

**Trigonometric Ratios**

**Trigonometric ratios are same for same angle**

**Relation between trigonometric ratios**

**In a `Delta ABC`; right angled at A; If AB=5;AC=12 and BC=13; find sin B;cosC and tanB**

**In a `Delta ABC`; right angled at B; If ` sin A = 3/5`; find `cos A; tan A; sec A and Cosec B.**

**In a `Delta ABC`; right angled at B; If ` sin A = 3/5`; find `cos A; tan A; sec A and Cosec B.**

**In a `Delta ABC`; right angled at B; If ` sin A = 3/5`; find `cos A; tan A; sec A and Cosec B.**

**Trigonometric ratios of `0^@ and 90^@`**