જો operatorname{cosec} theta = frac{p+q}{p-q} | vedclass

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(A) આપેલ છે $\operatorname{cosec} 	heta = \frac{p+q}{p-q}$.આપણે જાણીએ છીએ કે $\sin 	heta = \frac{p-q}{p+q}$.સૂત્ર $\sin 	heta = \frac{2 	an(	heta

Vedclass · Accepted Answer

$\sqrt{\frac{q}{p}}$

Vedclass · Answer

(A) આપેલ છે $\operatorname{cosec} 	heta = \frac{p+q}{p-q}$.આપણે જાણીએ છીએ કે $\sin 	heta = \frac{p-q}{p+q}$.સૂત્ર $\sin 	heta = \frac{2 	an(	heta/2)}{1 + 	an^2(	heta/2)}$ નો ઉપયોગ કરતા,$\frac{2 	an(	heta/2)}{1 + 	an^2(	heta/2)} = \frac{p-q}{p+q}$.બંને બાજુ ઉલટાવતા: $\frac{1 + 	an^2(	heta/2)}{2 	an(	heta/2)} = \frac{p+q}{p-q}$.યોગ-વિયોગની રીત (Componendo and Dividendo) વાપરતા:$\frac{1 + 	an^2(	heta/2) + 2 	an(	heta/2)}{1 + 	an^2(	heta/2) - 2 	an(	heta/2)} = \frac{(p+q) + (p-q)}{(p+q) - (p-q)}$.$\frac{(1 + 	an(	heta/2))^2}{(1 - 	an(	heta/2))^2} = \frac{2p}{2q} = \frac{p}{q}$.વર્ગમૂળ લેતા: $\frac{1 + 	an(	heta/2)}{1 - 	an(	heta/2)} = \sqrt{\frac{p}{q}}$.$	an(\pi/4) = 1$ હોવાથી,આ $	an(\pi/4 + 	heta/2) = \sqrt{\frac{p}{q}}$ થાય.તેથી,$\cot(\pi/4 + 	heta/2) = \frac{1}{	an(\pi/4 + 	heta/2)} = \sqrt{\frac{q}{p}}$.

જો $\operatorname{cosec} \theta = \frac{p+q}{p-q}$ હોય,તો $\cot \left(\frac{\pi}{4} + \frac{\theta}{2}\right)$ ની કિંમત શોધો.

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