Across
- 2. (U+-V)sinucosv+-cosusinv
- 4. is identity 1/sin
- 5. are opposite identities
- 9. are identities with (-x)
- 10. is identity 1/cos
- 12. is an identity->cos^2+sin^2=1
- 14. is identity sin2u=2sinucosu
- 16. is subtraction
- 17. is identity cos/sin
- 18. cosu(cosv)-sinu(sinv)
- 19. identity with (π/2-θ)
Down
- 1. cosu(cosv)+sinu(sin v)
- 3. is 1/sec
- 6. are identities tanθ=sinθ/cosθ
- 7. sin(u+-v)/cos(u+-v)
- 8. is 1/csc
- 11. is identity sin^2u=1-cos2u/2
- 13. tanu+-tanv/1-+tanutanv
- 15. the study of triangles
- 20. is sin/cos