Solve Q- 9,12,13,14 and 15 from Trigonometry chp
I'll mark u as brainliest .
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Step-by-step explanation:
16)solution: lhs
√sec theta-1/sec theta +1×√sec theta-1/sec theta-1 -√sec theta +1/sec theta-1×√sec theta +1/sec theta+1
=√ (sec theta -1) Square /sec theta-1 square +√(sec theta +1) square/ sec theta-1 . (square get cancel)
= sec theta-1/sec theta-1+sec theta+1/sec theta-1
=sec theta-1/tan theta+ sec theta+1/tan theta
=sec theta-1+ sec theta+1/tan theta
=sec theta-1+sec theta+1/tan theta(plus our substrate get cancel)
=2 sec theta/tan theta=2/cos theta/sin theta/cose theta
=2×1/cos theta /sin theta/ cos theta=2/cos theta×cos theta/sin theta
=2×1/sin theta
=2 cosec theta A= Rhs
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