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Trigonometry Examples
Step 1
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.
Step 2
Split into two angles where the values of the six trigonometric functions are known.
Step 3
Apply the sum of angles identity.
Step 4
The exact value of is .
Step 5
The exact value of is .
Step 6
The exact value of is .
Step 7
The exact value of is .
Step 8
The exact value of is .
Step 9
The exact value of is .
Step 10
The exact value of is .
Step 11
The exact value of is .
Step 12
Step 12.1
Simplify the numerator.
Step 12.1.1
Multiply by .
Step 12.1.2
Combine and .
Step 12.1.3
Combine and .
Step 12.2
Simplify the denominator.
Step 12.2.1
Multiply by .
Step 12.2.2
Combine and simplify the denominator.
Step 12.2.2.1
Multiply by .
Step 12.2.2.2
Raise to the power of .
Step 12.2.2.3
Raise to the power of .
Step 12.2.2.4
Use the power rule to combine exponents.
Step 12.2.2.5
Add and .
Step 12.2.2.6
Rewrite as .
Step 12.2.2.6.1
Use to rewrite as .
Step 12.2.2.6.2
Apply the power rule and multiply exponents, .
Step 12.2.2.6.3
Combine and .
Step 12.2.2.6.4
Cancel the common factor of .
Step 12.2.2.6.4.1
Cancel the common factor.
Step 12.2.2.6.4.2
Rewrite the expression.
Step 12.2.2.6.5
Evaluate the exponent.
Step 12.2.3
Multiply .
Step 12.2.3.1
Combine and .
Step 12.2.3.2
Combine using the product rule for radicals.
Step 12.2.3.3
Multiply by .
Step 12.2.4
Multiply by .
Step 12.2.5
Combine and simplify the denominator.
Step 12.2.5.1
Multiply by .
Step 12.2.5.2
Raise to the power of .
Step 12.2.5.3
Raise to the power of .
Step 12.2.5.4
Use the power rule to combine exponents.
Step 12.2.5.5
Add and .
Step 12.2.5.6
Rewrite as .
Step 12.2.5.6.1
Use to rewrite as .
Step 12.2.5.6.2
Apply the power rule and multiply exponents, .
Step 12.2.5.6.3
Combine and .
Step 12.2.5.6.4
Cancel the common factor of .
Step 12.2.5.6.4.1
Cancel the common factor.
Step 12.2.5.6.4.2
Rewrite the expression.
Step 12.2.5.6.5
Evaluate the exponent.
Step 12.2.6
Cancel the common factor of .
Step 12.2.6.1
Cancel the common factor.
Step 12.2.6.2
Rewrite the expression.
Step 12.2.7
To write as a fraction with a common denominator, multiply by .
Step 12.2.8
Combine and .
Step 12.2.9
Combine the numerators over the common denominator.
Step 12.2.10
Multiply by .
Step 12.3
Simplify the numerator.
Step 12.3.1
Multiply by .
Step 12.3.2
Multiply by .
Step 12.4
Simplify the denominator.
Step 12.4.1
Combine using the product rule for radicals.
Step 12.4.2
Multiply by .
Step 12.5
Simplify the numerator.
Step 12.5.1
Combine and into a single radical.
Step 12.5.2
Cancel the common factor of and .
Step 12.5.2.1
Factor out of .
Step 12.5.2.2
Cancel the common factors.
Step 12.5.2.2.1
Factor out of .
Step 12.5.2.2.2
Cancel the common factor.
Step 12.5.2.2.3
Rewrite the expression.
Step 12.5.3
Rewrite as .
Step 12.5.4
Any root of is .
Step 12.5.5
Multiply by .
Step 12.5.6
Combine and simplify the denominator.
Step 12.5.6.1
Multiply by .
Step 12.5.6.2
Raise to the power of .
Step 12.5.6.3
Raise to the power of .
Step 12.5.6.4
Use the power rule to combine exponents.
Step 12.5.6.5
Add and .
Step 12.5.6.6
Rewrite as .
Step 12.5.6.6.1
Use to rewrite as .
Step 12.5.6.6.2
Apply the power rule and multiply exponents, .
Step 12.5.6.6.3
Combine and .
Step 12.5.6.6.4
Cancel the common factor of .
Step 12.5.6.6.4.1
Cancel the common factor.
Step 12.5.6.6.4.2
Rewrite the expression.
Step 12.5.6.6.5
Evaluate the exponent.
Step 12.5.7
Combine and .
Step 12.6
Multiply the numerator by the reciprocal of the denominator.
Step 12.7
Cancel the common factor of .
Step 12.7.1
Cancel the common factor.
Step 12.7.2
Rewrite the expression.
Step 12.8
Combine and .
Step 12.9
Combine and .
Step 12.10
Cancel the common factor of and .
Step 12.10.1
Factor out of .
Step 12.10.2
Cancel the common factors.
Step 12.10.2.1
Factor out of .
Step 12.10.2.2
Factor out of .
Step 12.10.2.3
Factor out of .
Step 12.10.2.4
Cancel the common factor.
Step 12.10.2.5
Rewrite the expression.
Step 12.11
Multiply by .
Step 12.12
Multiply by .
Step 12.13
Expand the denominator using the FOIL method.
Step 12.14
Simplify.
Step 12.15
Cancel the common factor of and .
Step 12.15.1
Factor out of .
Step 12.15.2
Cancel the common factors.
Step 12.15.2.1
Factor out of .
Step 12.15.2.2
Cancel the common factor.
Step 12.15.2.3
Rewrite the expression.
Step 12.16
Apply the distributive property.
Step 12.17
Combine using the product rule for radicals.
Step 12.18
Multiply .
Step 12.18.1
Combine using the product rule for radicals.
Step 12.18.2
Multiply by .
Step 12.19
Simplify each term.
Step 12.19.1
Multiply by .
Step 12.19.2
Rewrite as .
Step 12.19.2.1
Factor out of .
Step 12.19.2.2
Rewrite as .
Step 12.19.3
Pull terms out from under the radical.
Step 12.20
Cancel the common factor of and .
Step 12.20.1
Factor out of .
Step 12.20.2
Factor out of .
Step 12.20.3
Factor out of .
Step 12.20.4
Move the negative one from the denominator of .
Step 12.21
Rewrite as .
Step 12.22
Apply the distributive property.
Step 12.23
Multiply .
Step 12.23.1
Multiply by .
Step 12.23.2
Multiply by .
Step 13
The result can be shown in multiple forms.
Exact Form:
Decimal Form: