In triangle DRY angle R =90º and Cosec Y = 7/8 , find
i)the length of YR
ii) the value of Cot D
iii) the value of cos Y
Answers
Answer:
Mathematics NCERT Grade 10, Chapter 8: Introduction to Trigonometry: In the beginning, a quote is given about trigonometry in an eye-catching way. Some real-life examples like finding the height of Qutub Minar, finding the width of the river, and finding the altitude of the ground from the hot air balloon are given in order to explain the need for trigonometry. In this chapter, students will study the trigonometric ratios of the angle i.e ratios of the sides of a right triangle with respect to its acute angles. The discussion of the trigonometric ratios will be restricted to acute angles only.
In section 8.2 various trigonometric ratios are explained. Trigonometric ratios are given in this section:
The question is wrong.
Cosec Y or any other angle can't be 7/8
Because in a right angle triangle Perpendicular or base can't be more than the hypotenuse.