Try another version of this question
If ` sin (x) = -2/7`, and `x` is in quadrant III, determine the exact value of each of the following. Use fractions and radicals only, no decimals. You do not need to rationalize the denominator.
`sin (x/2) =`
`cos (x/2) =`
`tan (x/2) =`
`sin (x/2) =`
`cos (x/2) =`
`tan (x/2) =`
Get help:
Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Decimal values are not allowed
Trig functions (sin,cos,etc.) are not allowed
`sqrt((7+3sqrt(5))/14)`
Box 2: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Decimal values are not allowed
Trig functions (sin,cos,etc.) are not allowed
`-sqrt((7-3sqrt(5))/14)`
Box 3: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Decimal values are not allowed
Trig functions (sin,cos,etc.) are not allowed
`(-7-3sqrt(5))/2`