Calculation: Sin & # 178; 1 ° + Sin & # 178; 2 ° + Sin & # 178; 3 °... + Sin & # 178; 45 ° + Sin & # 178; 46 °... + Sin & # 178; 89 °

sin²1°+sin²2°+sin²3°...+sin²45°+sin²46°...+sin²89°
＝sin^2(90-89)+sin^2(90-88)+...sin^2(90-46)+...+sin²45°+sin²46°...+sin²89°
=(cos89)^2+(cos88)^2+.+sin²45°+sin²46°...+sin²89°
=44+1/2
＝44.5

RELATED INFORMATIONS

1. Cos & # 178; 60 ° + Sin & # 178; 60 ° the square here & # 178;
2. -Why is sin (180-60 degrees) equal to sin 60 degrees
3. Sin minus 60 degrees is a fraction
4. If α + β = 120 °, then the minimum value of y = Sin & # 178; α + Sin & # 178; β is
5. Why is there only one value for √ Sin & # 178; 120
6. sin²1°+sin²2°+…… +Sin & # 178; 89 ° = how many processes
7. What's the difference between minus 0.25 square divided by minus half cube + one eighth minus one half? emergency
8. a. The second power of negative half a, the third power of one third a, the fourth power of negative quarter a, and the fifth power of one fifth a Write the nth monomial!
9. 0.049×2500+495×0.24+51×4.9=
10. 0.495×250+495×0.24+51×4.95
11. Given sin θ - cos θ = 1 / 2, then Sin & # 178; θ - cos & # 178; θ = ()
12. 3／cos²20°－1/sin²20°＋64sin²20°
13. Given that 0 ≤ α ≤ 2 π, the point P (COS α, sin α) is on the curve (X-2) &# 178; + Y & # 178; = 3, then the value of α is a detailed solution
14. Set 0
15. Given that cos α is equal to one third, α is in the fourth quadrant, find the value of sin α times Tan α
16. If sin α = 4 / 5, Tan (α + β) = 1 and α is the second quadrant angle, then Tan β=
17. If sin α = 35 and α is the second quadrant angle, then Tan α=______ ．
18. If sin (α - π) = 35 and α is the fourth quadrant angle, then Tan α = 0___ ．
19. Given that α is the angle of the second quadrant, sin α = 3 / 5, β is the angle of the third quadrant, Tan β = 4 / 3, find the value of Tan (α + β)
20. If a is the second quadrant angle and Tan (a - π / 4) = 7, what is sin (a + π / 4) equal to