Sin Θ - cos Θ = 1 / 2, find Tan Θ + cot Θ

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• 1. Sin θ - cos θ = 1 / 2, then Tan θ + cot θ=
• 2. Sin θ / radical (1-sin & sup2; θ) + radical (1-cos & sup2; θ) / cos θ Theta belongs to (3 π / 2,2 π)
• 3. Given Tan α + cot α = 52, α ∈ (π 4, π 2), find the values of COS 2 α and sin (2 α + π 4)
• 4. Given Tan α + cot α = 52, α ∈ (π 4, π 2), then Cos2 α = 1___ ．
• 5. 15(sin2θ + cos2θ) × 37(sin2π + cos2π) = 0
• 6. If Sina = 5, then cosa + sina is cosa Sina + cosa sina is cosa + Sina=
• 7. (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°）
• 8. 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
• 9. 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?
• 10. Given cot = 1 / 2, find the value of sina times cosa
• 11. (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)
• 12. The result of simplifying sin (2 π - a) cot (π + a) / cos (π - a) is
• 13. Simplification [cos (α - π) * cot (5 π - α)] / [sin (- 2 π - α)] ② (1 + cot & # 178; E) (E is the third quadrant angle)
• 14. Simplification of cos α + cot α / 1 + sin α
• 15. Simplification of COS (a - π) cot (5 π - a) / sin (- 2 π - a) The answer is the square of - COTA,
• 16. Simplify (COS ^ 2 α - Sin ^ 2 β) / (sin ^ 2 α * sin ^ 2 β) - cot ^ 2 α cot ^ 2 β
• 17. It is known that 2sin2 α + 2Sin α cos α 1 + Tan α = K (0 ＜ α＜ π 2)
• 18. If Tan α = 4, then 2Sin α & sup2; + sin α cos α + 3 =?
• 19. Given Tan α = 2, find the value of Sin & sup2; α + 2Sin α cos α + 2?
• 20. Given that the distance from a point P on the hyperbola X & # 178 / 36-y & # 178 / 64 = 1 to a focus of the hyperbola is equal to 9, find the perimeter of △ pf1f2