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If-sin1-a-1-cos1-cos2-1-cos2-cos3-1-cos44-cos45-




Question Number 210718 by hardmath last updated on 17/Aug/24
If   sin1° = a  (1/(cos1°∙cos2°)) + (1/(cos2°∙cos3°)) +...+ (1/(cos44°∙cos45°)) = ?
$$\mathrm{If}\:\:\:\mathrm{sin1}°\:=\:\mathrm{a} \\ $$$$\frac{\mathrm{1}}{\mathrm{cos1}°\centerdot\mathrm{cos2}°}\:+\:\frac{\mathrm{1}}{\mathrm{cos2}°\centerdot\mathrm{cos3}°}\:+…+\:\frac{\mathrm{1}}{\mathrm{cos44}°\centerdot\mathrm{cos45}°}\:=\:? \\ $$
Commented by Spillover last updated on 18/Aug/24
i get 22 ?
$${i}\:{get}\:\mathrm{22}\:? \\ $$

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