Given that a is an acute angle, and Sina cosa / Sina + cosa = 1 / 3, Tana = Sina / cosa, find Tana

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• 1. Given Tana = - 3 / 4, find the square of 2 + sinacosa cosa The detailed process is needed. According to the square of sina + the square of cosa = 1, the detailed process solution is obtained, and the detailed and fast additional fraction is obtained
• 2. Given a ∈ (0, π), cosa = 1 / 3, then what is Tana?
• 3. If Tana / 2 = 3, then cosa is
• 4. Tana / 2 = 1 / 3 for cos (π - a)
• 5. If Tana = 1 / 2, then what is cos (2a + π / 2), the answer is 45 degrees,
• 6. Given cos (A-wu / 6) + Sina = 4 / 5 times the root 3, then the value of sin (a + 7 Wu / 6) is?
• 7. sina=5/13 π/2
• 8. It is known that sin (a + b) = 33 / 65, CoSb = 5 / 13 Such as the title
• 9. Let Tana = √ 1-A / A, where 0
• 10. If 2sina-3cosa = 0, then sin2a=
• 11. If Tana = - 2, then the square of Sina - 3 * (the square of COSA) =?
• 12. Tana = 3 find the square of the following formula (Sina) - 2sinacosa - (COSA) / 4 (COSA) - 3sinacosa
• 13. If Tana = 1 / 2, what degree is ∠ a equal to
• 14. Tana = 0.1 A is equal to what degree? Be specific```` Yes + points```
• 15. Tana = 1 / 3, how many degrees does a equal
• 16. What is 1 + (Tana) ^ 2 How much is the simplification
• 17. Sina and cosa are two of the equations 13X square-7x + M = 0, (1). Find the value of Tana (2). 1-tana / cos 2A × (1 + Tana)
• 18. Given Tana = 2 / 3, find Sina times cosa, and then divide by sin's square a minus cos's Square a
• 19. Sinacosa = 1 / 8, and Wu / 4
• 20. Given cot = 1 / 2, find the value of sina times cosa