Trigonometry Examples

Simplify Using Half-Angle Formula sin(75)
Step 1
Split into two angles where the values of the six trigonometric functions are known.
Step 2
Apply the sum of angles identity.
Step 3
The exact value of is .
Step 4
The exact value of is .
Step 5
The exact value of is .
Step 6
The exact value of is .
Step 7
Simplify .
Tap for more steps...
Step 7.1
Simplify each term.
Tap for more steps...
Step 7.1.1
Multiply .
Tap for more steps...
Step 7.1.1.1
Multiply by .
Step 7.1.1.2
Multiply by .
Step 7.1.2
Multiply .
Tap for more steps...
Step 7.1.2.1
Multiply by .
Step 7.1.2.2
Combine using the product rule for radicals.
Step 7.1.2.3
Multiply by .
Step 7.1.2.4
Multiply by .
Step 7.2
Combine the numerators over the common denominator.
Step 8
The result can be shown in multiple forms.
Exact Form:
Decimal Form: