Math, asked by rajendr4747, 2 months ago

9cosec 6 - 9 cot 6 =​

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Answered by lakshmimandi2248
1

f(x)=13+4tan2x+9cot2x</p><p>Use AM &amp; G.M</p><p>24tan2x+9cot2x≥(4tan2x×9cot2x)21</p><p>4tan2x+9cot2x≥12</p><p>13+4tan2x+9cot2x≥25</p><p>f(x)≥25</p><p></p><p>

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