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Question

If 2sinx=1, πc2<x<πc and 2cosy=1, 3πc2<y<2πc. find the value of tanx+tanycosxcosy

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Solution

2sinx=1sinx=12x=302cosy=1cosy=12y=45thevalueoftanx+tanycosxcosy=tan30+tan45cos30cos45=13+13212=11.732+11.732211.414=1.577.θ66.707=9.918

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