Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202120 Aug 2021Evening ShiftMathematicsIndefinite IntegrationActual

∫ sec x sin ( 2 x + θ ) + sin θ d x =

Options

  1. A( tan x + tan θ ) sec θ + c
  2. B2 ( tan x + tan θ ) sec θ + c
  3. C2 ( sin x + tan θ ) sec θ + c
  4. D2 ( cos x + tan θ ) sec θ + c

Correct answer

B. 2 ( tan x + tan θ ) sec θ + c

Step-by-step solution

Given   I  = ∫ sec x sin 2 x + θ + sin θ d x Using the formula sin C + sin D = 2 sin C + D 2 cos C - D 2 ⇒   I  = ∫ sec x 2 sin 2 x + 2 θ 2 cos 2 x + θ - θ 2 d x   ⇒ I  = ∫ sec x 2 sin x + θ cos x d x ⇒   I  = ∫ sec x cos x 2 sin x + θ cos x cos x cos x d x ⇒   I  = ∫ 1 2 sec x cos x sin x cos θ + cos x sin θ cos x d x use sin A + B = sin A cos B + cos A sin B formula

Practice Indefinite Integration on Quantrex Academy →

More from Indefinite Integration

If 5 x x -2 dx = ax + b | x -2 x |+ c , then a + b = 2025x Cos ⁻¹ ( 1-x^2 1+x^2 ) d x(x>0)= 2025d x (1+ x ) x-x^2 = 2025If x x x+1 ~d x= f (x)+ k , then f ( 4 )= 2025If x^4+1 x^2+1 d x=A x^3+B x^2+C x+D Tan ⁻¹ x+E , then A+B+C+D= 2025If x^2-x+2 x^2+x+2 d x=x- (f(x))+ 2 7 Tan ⁻¹(g(x))+c , then f (-1)+ 7 ~g (-1)= 2025(x- 3 ) (x+ 6 ) d x= 2025If a x+3 x 5 x+2 x d x= 26 29 x- k 29 |5 x+2 x|+c , then |a+k|= 2025 Full Indefinite Integration list All AP EAMCET PYQs