Home
Class 12
MATHS
if 0<=x<=pi and 81^(sin^2x)+81^(cos^2x)...

if `0<=x<=pi` and `81^(sin^2x)+81^(cos^2x)=30` then `x=`

A

`(pi)/(6),(pi)/(3)`

B

`(pi)/(3),(pi)/(2)`

C

`(5pi)/(6),(pi)/(3)`

D

`(2pi)/(3),(pi)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    OBJECTIVE RD SHARMA|Exercise Chapter Test|60 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    OBJECTIVE RD SHARMA|Exercise Section II - Assertion Reason Type|13 Videos

  • TRIGONOMETRIC EQUATIONS AND INEQUATIONS

    OBJECTIVE RD SHARMA|Exercise Chapter Test|60 Videos

Similar Questions

Explore conceptually related problems

" if " f(0) = |{:(sin 0 ,,cos 0,,sin 0),(cos0,,sin0,,cos0),(cos0,, sin 0,,sin 0):}| then

The inverse of [[0, 0, 1], [0, 1, 0], [1, 0, 0]] is

Find |A (adjoint A)| and |adjoint A|, if A=[(a,0,0),(0,a,0),(0,0,a)]

Simplify (0.12**(0.0104-0.002)+0.36*0.002)/(0.12*0.12)

If A={:[(0,0,0),(0,0,0),(1,0,0)]:} , then

If A = [{:( 0,0,0),(0,0,0) ,(0,1,0):}] ,then A is

If A=[(0,0,0,0),(0,0,0,0),(1,0,0,0),(0,1,0,0)] then (A) A^2=I (B) A^2=0 (C) A^3=0 (D) none of these

If A=[[a, 0, 0], [0, a, 0], [0, 0, a]] , then |adjA|=

If A=[[a, 0, 0], [0, a, 0], [0, 0, a]] , then |A||adjA|=

If A=[[a,0,0] , [0,a,0] , [0,0,a]] then |adj A|=