| Sum Formulas | Difference Formulas | Double Angle Formula | Half Angle Formula | Solving Trig Equations |
|---|---|---|---|---|
|
√6-√2/4
Find the exact value of cos 75°.
|
√2 + √6 / 4
Find the exact value of cos π/12.
|
-24/25
If sin θ = 3/5 (90<θ<180), find the exact value of sin (2θ).
|
±√1-cos α / 2
sin α/2 = ?
|
sin θ = -√3/2
θ = 4π/3, 5π/3
Solve the equation.
2 sin θ + √3 = 0 0<θ<360 |
|
√6+√2/4
Find the exact value of sin 7π/12
|
-√6-√2/4
Find the exact value of sin π/12.
|
7/25
If sin θ = 3/5 (90<θ<180), find the exact value of cos (2θ).
|
-√5/5
If cos α = -3/5 (180<α<270),
Find the exact value of cos α/2 |
θ = π/3, 5π/3
sin θ/2 = 1/2
(0≤θ<2π) |
|
2+√3
What is the exact value for tan 75°?
|
√3/2
Find the exact value of sin 80° cos 20° - cos 80° sin 20°.
|
2 tan θ / 1-tan²θ
Develop a formula for tan 2θ in terms of tan θ.
|
±√1-cos α / 1 + cos α
tan α/2 = ?
|
θ = π/6, 5π/6, π/2
2 sin² θ - 3 sin θ + 1 = 0
(0≤θ<2π) |
|
-√6-√2/4
Find the exact value of cos 165°.
|
1
Find the exact value of:
sin [sin⁻¹(-4/5) - tan⁻¹ 3/4] |
Sin 2θ= 20/25
Cos 2θ= 3/5
tan θ = 1/2 (180<θ<270)
Find sin 2θ and cos 2θ. |
1/5
sin² (1/2 cos⁻¹ 3/5)
|
θ = π/2
5 csc θ - 3 = 2
|
|
4√3 + 3 / 10
Find the exact value of sin(cos⁻¹ 1/2 + sin⁻¹ 3/5)
|
11√5/25
If sin α = 4/5 (90<α<180) and sin β = -2√5/5 (180<β<270), find the exact value of cos (α+β)
|
Sin 2θ= 20/25
Cos 2θ= 3/5
sec θ = 2 ; csc < 0
Find sin 2θ and cos 2θ |
9/10
cos² (1/2 sin⁻¹ 3/5)
|
θ = π/3, 5π/3
tan² θ = 3/2 sec θ
|
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