4. tanf + cotd=A sec8 cosec 08609.00860 9 8. 560 0+ 00860 900860 08600 – InterviewSolution

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4. tanf + cotd=A sec8 cosec 08609.00860 9 8. 560 0+ 00860 900860 08600

Answer»

Let theta = A

Then,tan A + cot A= sin A/cos A + cos A/sin A= (sin^2 A + cos^2 A)/cosA.sinA= 1/cosA.sinA= secA.cosecA

(A) is correct option

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