How to Solve Using Trigonometric Identities
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Cofunction Identities
Pythagorean Identities
Quotient Identities
Reciprocal Identities
Even/Odd Identities
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(for our purposes, let's assume that there is a limit of 0° to 360°)
1/csc(X)=1/2
sin(90°-X)=√3/2
cos(-X)=1/2
Answers
30°, 150 °
30°,150°
60°,300°