यदि tan⁻¹ (x-1/x-2) + tan⁻¹ (x+1/x+2 )= π/4 तो x का मान ज्ञात कीजिए।
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Given :
To find : x का मान ज्ञात कीजिए
Solution:
दोनों तरफ sin लेने पर
हमें ज्ञात है की tan (π/4) = 1
tan(A + B) = (tanA + tanB)/(1 - tanAtanB)
=>
=>
=>
=>
=> 2x² - 4 = -3
=> 2x² = 1
=> x² = 1 /2
=> x = ± 1/√2
x का मान = ± 1/√2
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