Trigonometry Examples

Solve for y sin(y)=2/( square root of 5)
Step 1
Simplify .
Tap for more steps...
Step 1.1
Multiply by .
Step 1.2
Combine and simplify the denominator.
Tap for more steps...
Step 1.2.1
Multiply by .
Step 1.2.2
Raise to the power of .
Step 1.2.3
Raise to the power of .
Step 1.2.4
Use the power rule to combine exponents.
Step 1.2.5
Add and .
Step 1.2.6
Rewrite as .
Tap for more steps...
Step 1.2.6.1
Use to rewrite as .
Step 1.2.6.2
Apply the power rule and multiply exponents, .
Step 1.2.6.3
Combine and .
Step 1.2.6.4
Cancel the common factor of .
Tap for more steps...
Step 1.2.6.4.1
Cancel the common factor.
Step 1.2.6.4.2
Rewrite the expression.
Step 1.2.6.5
Evaluate the exponent.
Step 2
Take the inverse sine of both sides of the equation to extract from inside the sine.
Step 3
Simplify the right side.
Tap for more steps...
Step 3.1
Evaluate .
Step 4
The sine function is positive in the first and second quadrants. To find the second solution, subtract the reference angle from to find the solution in the second quadrant.
Step 5
Solve for .
Tap for more steps...
Step 5.1
Remove parentheses.
Step 5.2
Remove parentheses.
Step 5.3
Subtract from .
Step 6
Find the period of .
Tap for more steps...
Step 6.1
The period of the function can be calculated using .
Step 6.2
Replace with in the formula for period.
Step 6.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 6.4
Divide by .
Step 7
The period of the function is so values will repeat every radians in both directions.
, for any integer