In the triangle ABC, it is known that sina + sinc = 2sinb, and B = 60 degrees. If the area of triangle ABC is [root 3 / 2], then the opposite side B of angle B is equal to

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• 1. Given that a belongs to (Wu / 2,3 Wu / 2), Tan (A-7 Wu) = - 3 / 4, then the value of sina + cosa is equal to?
• 2. Given cot = 1 / 2, find the value of sina times cosa
• 3. Sinacosa = 1 / 8, and Wu / 4
• 4. Given Tana = 2 / 3, find Sina times cosa, and then divide by sin's square a minus cos's Square a
• 5. 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)
• 6. What is 1 + (Tana) ^ 2 How much is the simplification
• 7. Tana = 1 / 3, how many degrees does a equal
• 8. Tana = 0.1 A is equal to what degree? Be specific```` Yes + points```
• 9. If Tana = 1 / 2, what degree is ∠ a equal to
• 10. Tana = 3 find the square of the following formula (Sina) - 2sinacosa - (COSA) / 4 (COSA) - 3sinacosa
• 11. (COSA) 2 / (SINB) 2 + (Sina) 2 / (Cos2) = 1 It's not (Cos2), it's (CoSb) &; It's not a + B = 45 degrees, it's a + B = 90 degrees a,b∈（0,90°）
• 12. If Sina = 5, then cosa + sina is cosa Sina + cosa sina is cosa + Sina=
• 13. 15(sin2θ + cos2θ) × 37(sin2π + cos2π) = 0
• 14. Given Tan α + cot α = 52, α ∈ (π 4, π 2), then Cos2 α = 1___ ．
• 15. Given Tan α + cot α = 52, α ∈ (π 4, π 2), find the values of COS 2 α and sin (2 α + π 4)
• 16. Sin θ / radical (1-sin & sup2; θ) + radical (1-cos & sup2; θ) / cos θ Theta belongs to (3 π / 2,2 π)
• 17. Sin θ - cos θ = 1 / 2, then Tan θ + cot θ=
• 18. Sin Θ - cos Θ = 1 / 2, find Tan Θ + cot Θ
• 19. (1-tan α) / (1 + Tan α) = 3-2 √ 2 find the value of [(sin α + cos α) ^ 2-1] / (cot α - sin α times cos α)
• 20. The result of simplifying sin (2 π - a) cot (π + a) / cos (π - a) is