- Trigonometry:In a right angled OAB, where BOA = ,
i. sin = Perpendicular = AB ; Hypotenuse OB ii. cos = Base = OA ; Hypotenuse OB iii. tan = Perpendicular = AB ; Base OA iv. cosec = 1 = OB ; sin AB v. sec = 1 = OB ; cos OA vi. cot = 1 = OA ; tan AB - Trigonometrical Identities:
- sin
^{2}+ cos^{2}= 1. - 1 + tan
^{2}= sec^{2}. - 1 + cot
^{2}= cosec^{2}.

- Values of T-ratios:
0° (/6)

30°(/4)

45°(/3)

60°(/2)

90°sin 0 1 2 3 2 1 cos 1 3 2 1 2 0 tan 0 1 3 1 3 not defined - Angle of Elevation:Suppose a man from a point O looks up at an object P, placed above the level of his eye. Then, the angle which the line of sight makes with the horizontal through O, is called the angle of elevation of P as seen from O.Angle of elevation of P from O = AOP.
- Angle of Depression:Suppose a man from a point O looks down at an object P, placed below the level of his eye, then the angle which the line of sight makes with the horizontal through O, is called the angle of depression of P as seen from O.

# Height and Distance - Important Formulas |Aptitude

Subscribe to:
Post Comments (Atom)

## Top Views

- The Hindu Vocabulary_31_January_2021
- The Hindu Vocabulary_14_March_2021
- Important List Of Famous Awards Established Year
- IMPORTANT HIGHEST PEAK HEIGHT & STATES IN INDIA
- SPORTS STADIUM IN INDIA
- CDS Exam
- English Reading Comprehension Set 118
- 23 February Important Current Affairs In English
- 6 March 2021 Important Current Affairs In English
- How to prepare for Exam Tips

## No comments:

## Post a Comment