Answers

  • Brainly User
2014-10-08T20:56:21+05:30
1. cos 30 =  \frac{ \sqrt{3} }{2}
sec 60 = 2
cosec 90 = 1
so on substituting the values , we get=  \frac{ \sqrt{3} }{6}
 \frac{1}{2 \sqrt{3} }
2. sin 30 = 1/2
    cos 30 =  \frac{ \sqrt{3} }{2}
     so on substituting the values , we get  \frac{1 +  \sqrt{3} }{2}
3. sin 60 =  \frac{ \sqrt{3} }{2}
    cos 45 = \frac{1}{ \sqrt{2} }
     so on substituting the values , we get  \frac{3 + \sqrt{2} }{2}
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