### Eamcet - Maths - Trigonometric Equations Test

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If cos 2θ+cos 8θ= cos 5θ then θ=

If tan (πcos x) = cot (π sinx) then cos(x-π/4) =

If sin 7θ+sin 4θ+ sin θ=0, 0≤θ≤ π/2 then θ=

The solution of sin 2θ+cos 2θ+sin θ+ cos θ+1=0 in the first quadrant is

If 4 cos θ.cos (1200+ θ). Cos (1200- θ)=1/2 then θ=

If sin A=sin B and cos A=cos B then A=

If tan A,tan B are the roots of x2-px+q=0,the value of sin2(A+B) is

If tan2 θ=3 cosec2 θ-1 then θ=

If tan x+ tan 4x+tan 7x=tan x tan 4x tan 7x, then x=

The domain of Cos-1 (4x-9) is

If 2Sin2 θ=3 Cos θ, then the valueof θ in [0,2π] are

If cos θ=cos 5π/4, then θ=

The solution set of sec θ=2cos θ is

If tan θ+ tan 2θ+tan 3θ= 0 then θ=

If the roots of a(b-c)x2+b(c-a)x+c(a-b)=0 are equal,then a,b,c are in

If 6 Sec2 θ-5 Sec θ+1=0 then θ=

The general solution of sin2 θ sec θ+ √3tan θ=0 is

If 2 Sin2x + √3 Cosx+1=0, then θ=

If cos θ+√3 sinθ=2 then θ=

If 2-cos3 θ=3 sin θ cos θ then θ=

All the values of x satisfying sin 2x+ sin 4x= 2 sin 3x are

If tan θ+tan (600+θ) tan (1200+θ) =3, then θ=

If the sum of the squares of the roots of the equation x2-(sin α-2)x-(1+sin α)=0 is least,then α=

If tan θ + tan 2θ+ √3 tan θ tan 2θ=√3 then θ=

If x is an acute angle and sin(x+280) =cos (3x-780), then x=

If cot θ+ cosec θ= √3 then θ=

The smallest positive values of x and y which satisfy tan(x-y) =1, sec(x+y) = 2/√3 are

If tan (π/2 sin θ) = cot (π/2 cos θ) then sin (θ+ π/4) =

If sin θ=-7/25 and  is not in the first quadrant, then (7cot θ -24 tan θ) / (7cot θ+24 tan θ) =

If y=tan x cot 3x,xR,then

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