Question

if theta =pi c/4 nad l=44 then find the value of r

Answer 1

Step-by-step explanation:

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Answer 2

r = π ÷. 12

Step-by-step explanation:

$θ=12π,tan4θ−14tan2θ</p><p></p><p>⇒tan2θ[tan2θ−14]</p><p></p><p>tan2θ=[1−tan2θ]2tanθ</p><p></p><p>tan2(12π)=(1−tan22π)2tan2π</p><p></p><p>31=1−tan2(12π)2tan(12π)</p><p></p><p>1−tan22π=2πtan(12π)</p><p></p><p>tan(12π)=p</p><p></p><p>P2+23p−1=0</p><p></p><p>P=2−23±12+4</p><p></p><p>P=2−23±4</p><p></p><p>P=2−3</p><p></p><p>⇒tan(12π)=2−3</p><p></p><p>tan2(12π)=(7−43)</p><p></p><p>tan2(12π)[tan212π−14]=(7−43)[7−43−14]</p><p></p><p>⇒(43−7)(43+7)</p><p></p><p>⇒488−49=−1</p><p></p><p>∴tan4θ−14tan2θ=−1</p><p></p><p>at θ=12π</p><p></p><p></p><p>$