Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Explain solution for RD Sharma Class 12 Chapter 15 Tangent and Normals Exercise Very short Answers Question 17 for maths textbook solution

Explain solution for RD Sharma Class 12 Chapter 15 Tangent and Normals Exercise Very short Answers Question 17 for maths textbook solution.

Answers (1)

Hint :

\begin{aligned} &\text { slope of normal }=\frac{-1}{\text { slope of } \text { tangent }} \\ &\text { i.e., } \frac{-1}{\frac{d y}{d x}} \end{aligned}

Given :

Given curve,

y=cosx \ \ \ \text{ at } (0,1)

We have to write the slope of normal to the given curve at point (0, 1)

Solution :

Here,

            y=cosx \ \ \ \text{ at } (0,1)

On differentiating with respect to x, we get

   \frac{d y}{d x}=-sinx

Now,

\begin{aligned} &\text { slope of } \text { tangent }=\left(\frac{d y}{d x}\right)_{(0,1)}=0 \\ &\text { slope of normal }=\frac{-1}{\text { slope of tangent }} \end{aligned}

                                     =\frac{-1}{0}=\infty

Hence, normal line is x=0.

Posted by

lovekush

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Single Girl Child Scholarship 2024: Registration extended till January 10; eligibility criteria, amount
anam-khan

CBSE wants international boards reined in; letter to education ministry seeks directions for AIU
anam-khan

PM Modi's Pariksha Pe Charcha 2025 to be held next month, registrations open till January 14

Latest Question