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Mastering Trigonometric Equations

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Questions and Answers

1 + tan² X

sec² X

sin² X + cos² X

sin(A±B)

sinAcosB ± cosAsinB

1 + cot² X

csc² X Signup and view all the answers

cos(A±B)

cosAcosB -+ sinAsinB Signup and view all the answers

tan(A±B) =

(tanA ± tan B) / (1 -+ tanAtanB) Signup and view all the answers

sin 2X

2sinXcosX Signup and view all the answers

cos 2X

2cos²X - sin²X or 2cos²X - 1 or 1 - 2sin²X Signup and view all the answers

tan 2X

2tanX / (1- tan²X Signup and view all the answers

sin X

(e^iX - e^-iX) / 2i Signup and view all the answers

cos X

e^iX + e^-iX / 2 Signup and view all the answers

tan X

[-i (e^iX - e^-iX)] / (e^iX + e^-iX) Signup and view all the answers

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