Skip to content
Philoid
Browse Saved
Back to chapter
Maths
11. Trigonometric Equations
Home · Class 11 · Maths · Ref. Book · 11. Trigonometric Equations
Prev
Next
Q11 of 142 Page 11

Mark the Correct alternative in the following:

If cot x – tan x = sec x, then x is equal to





1-2sin2x=sin x


2sin2x+sin x-1=0


Sin x = 0.5 or -1


But the equation is invalid for sin x=-1


So, sin x = 0.5 = sin(π/6)


Hence x=


Option B

More from this chapter

All 142 →
9

Mark the Correct alternative in the following:

The smallest positive angle which satisfies the equation is


10

Mark the Correct alternative in the following:

If 4 sin2 x = 1, then the values of x are


12

Mark the Correct alternative in the following:

A value of x satisfying is


13

Mark the Correct alternative in the following:

In (0, π), the number of solutions of the equation tan x + tan 2x + tan 3x = tan x tan 2x tan 3x is


Questions · 142
11. Trigonometric Equations
1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 8 8 9 9 10 10 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved