Click to Chat

1800-2000-838

+91-120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

I cudnt solve these Question ......can u help me out plzz:-

Q.1 The Smallest Positive root of the equation tan(x) - x = 0, lies in :-

a) (0,pi/2)

b) (pi/2, pi)

c) (pi, 3pi/2)

d) (3pi/2, 2pi)

Q.2 The number of roots of the equation x + 2tan (x) = pi/2 in the interval [0, 2pi] is

a) 1

b)2

c)3

d) infinite

Thanks!

6 years ago

419 Points

Dear Ashray

See the pic for the solution

All the best.

AKASH GOYAL

Please feel free to post as many doubts on our discussion forum as you can. We are all IITians and here to help you in your IIT JEE preparation.

Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

6 years ago
Mir Noaman Ali IIT-Roorkee
57 Points

answer to first question = as they asked about smallest positive root so tan x cant be -ve as x is always + vs nd in 0 ,pi/2 tan x is always gr8 dan x ... but from pi to 3pi/2 tan x goes from 0 to infinity  so it will at some point of time in 3rd quadrant will be = x ......... alternative method is by drawing graphs u will easily get it ............................................................................. ANSWER TO 2ND QUESTION  2TANX = PI/2 - X ........... PI/2 - X IS A STRAIGHT LINE SO U CAN DRAW IT ND THEN 2 TAN X GRAPH PLEASE DRAW IT U CAN OBSERVE THAT THE GRAPHS INTERSECTS AT 3 POSITIONS ONE EACH IN FRST 2ND ND 4TH QUADRANTS .THANK YOU PLEASE APPROVE MY ANSWER IF U LIKE IT

6 years ago
Mayank Jain
37 Points

Thanks a lot !

6 years ago
Think You Can Provide A Better Answer ?

## Other Related Questions on Trigonometry

View all Questions »
• Complete JEE Main/Advanced Course and Test Series
• OFFERED PRICE: Rs. 15,900
• View Details