The formula Sin & # 178; π / 2 = cos & # 178; π / 2=
sin²π/2= 1²=1
cos²π/2=0²=0
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- 1. Is there a similar formula for 1 / cos & # 178; X = sec & # 178; X?
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- 3. The McLaurin series of F (x) = x · cos (x ^ 2 / 2) is mainly used to find the n-th derivative of F (x)
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- 6. 2 (- cos (π / 6) + isin (π / 6)) = 2 (COS (π - π / 6) + isin (π - π / 6)) why is π - π / 6? Who can tell me
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- 9. Verification: cos α + √ 3 · sin α = 2Sin (π / 6 + α). Need detailed process, thank you
- 10. Can (COS π / 4 + isin π / 4) ^ n be expressed as (Cosn π / 4 + Sinn π / 4)? Why? Here I ^ 2 = - 1
- 11. What are the formulas of Sin & # 178; α = (1-cos (2 α)) / 2 and Sin & # 178; α = (1-sin (2 α)) / 2
- 12. Sin & # 178; X =? Cos & # 178; =? Theorem formula
- 13. If cos (x + π 4) = 45, X ∈ (− π 4, 0), then SiNx=______ .
- 14. When x →∞, limx / SiNx = ∞
- 15. F '(SiNx) = cos ^ 2 (x), the calculation of F (x) needs detailed process, This is the exercise there
- 16. What is the formula of 1-cos = 2Sin ^ 2 (x / 2)?
- 17. What is the meaning of E = MC2
- 18. Einstein's E = MC2
- 19. What is the specific explanation of Einstein e = MC2?
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