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QUESTION 6 Eatablish the identity (sec u-tan (sec u + ton ) = 1 3 (12) Path: P QUESTION 7 Find the inverse function of the fu

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AN 6. (seco - fano) (sec u + danu) = 1 we know that (a-b) (a+b) = a2_b² Lones (decu- tanu) (secut tonu) 7 seceu-danau know هل7 loy = tan-( tan: (7) + 5 tan! () + 5 y 10 nc 17 tant (2) 10 2 1 a, tani (2) - 2 Aus And 8. tano =7 =P 24 T<O< 31 (means inloso -24 25 ( -ve sign because o in u 3rd quadrant now we know Cos (24) I-nylon & Cos (20) 2 (coogle- 2 (-24) 2 25/ 2 x 576 5

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