# Substitution method

Solve goniometric equation:

sin4 θ - 1/cos2 θ=cos2 θ - 2

Result

θ = (Correct answer is: k*pi)

### Step-by-step explanation:

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips to related online calculators
Looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?
Most natural application of trigonometry and trigonometric functions is a calculation of the triangles. Common and less common calculations of different types of triangles offers our triangle calculator. Word trigonometry comes from Greek and literally means triangle calculation.

## Related math problems and questions:

• Completing square
Solve the quadratic equation: m2=4m+20 using completing the square method
• Solve equation
solve equation: [(a2)+3]1/2 + [(a2)-3]1/2 = 5
• Find the 2
Find the term independent of x in the expansion of (4x3+1/2x)8
• Trigonometric functions
In the right triangle is: tg α= frac(2) 1 Find the value of s and c: sin α= (s)/(√ 5) cos α= (c)/(√ 5)
• Cotangent
If the angle α is acute, and cotan α = 1/3. Determine the value of sin α, cos α, tg α.
• Trigonometry
If you know that cos(γ) = sin (806°), what is the angle γ?
• Simplest form
Find the simplest form of the following expression: 3 to the 2nd power - 1/4 to the 2nd power.
• Subtracting complex in polar
Given w =√2(cosine (p/4) + i sine (pi/4) ) and z = 2 (cosine (pi/2) + i sine (pi/2) ), what is w - z expressed in polar form?
• Calculate 2
Calculate the largest angle of the triangle whose side are 5.2cm, 3.6cm, and 2.1cm
• Non linear eqs
Solve the system of non-linear equations: 3x2-3x-y=-2 -6x2-x-y=-7
• Eq2 2
Solve following equation with quadratic members and rational function: (x2+1)/(x-4) + (x2-1)/(x+3) = 23