SOLUTION: 1. Verify the identity.
sin(9π₯)+sin(3π₯)/cos(9π₯)+cos(3π₯)=tan(6π₯)
2. Find the exact value of the following expression given that tanπ =β2 and
90Β°<π
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Question 1187012: 1. Verify the identity.
sin(9π₯)+sin(3π₯)/cos(9π₯)+cos(3π₯)=tan(6π₯)
2. Find the exact value of the following expression given that tanπ =β2 and
90Β°<π <180Β°. Show all logic for your choices, including pictures of the quadrant to derive signs and a triangle to derive trigonometric values.
sin2π
These two problems are so confusing for me. First, I'm not sure where to begin and how to solve it at all. How do I verify the identity and the second, I am really lost on what to do. Please help.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
1. Verify the identity.
sin(9π₯)+sin(3π₯)/cos(9π₯)+cos(3π₯)=tan(6π₯)
------------------
Look up "Half Angle Formulas" on Wikipedia.
2. Find the exact value of the following expression given that tanπ =β2 and
90Β°<π <180Β°. Show all logic for your choices, including pictures of the quadrant to derive signs and a triangle to derive trigonometric values.
sin2π
These two problems are so confusing for me. First, I'm not sure where to begin and how to solve it at all. How do I verify the identity and the second, I am really lost on what to do. Please help.
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