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Grade 11Trigonometry

Find universal value of theta?Or maximum value of theta?

Question image for Find universal value of theta?Or maximum value of
Profile image of poorn 2
8 Years agoGrade 11
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1 Answer

Profile image of deepak singhal
8 Years ago
sin(x)/cos(x)+cos(x)=2/cos(x);
{sin(x)+cos2(x)}/cos(x)=2/cos(x);
sin(x)+1-sin2(x)=2;
sin2(x)-sin(x)+1=0;
solve this quadratic