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sin67+cos75^(@)...

sin67+cos75^(@)

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To cos(A+B)=cosx.cosy - sin x sin "and hence find "cos75^(@)

Evaluate: |[cos15^@ sin15^@],[sin75^@cos75^@]| .

Evaluate: |(cos15^@,sin15^@),(sin75^@,cos75^@)|

Show that {:|(cos15^@, sin15^@),(sin75^@, cos75^@)|:}= 0

If A=[[sin15^@ cos15^@],[-sin75^@ cos75^@]] , then evaluate |A|.

The polar form of sin 75^(@)+i cos 75^(@) is

Evaluate: i) cos75^(@) , ii) cos15^(@) , iii) tan75^(@) , iv) tan105^(@) , v) sin105^(@)

Express sin 67^(@)+cos75^(@) in terms of trigononmertic ratios of angles between 0^(@)and 45^(@) .

Express sin 67^(@)+cos75^(@) in terms of trigononmertic ratios of angles between 0^(@)and 45^(@) .

Express sin 67^@+cos 75^@ in terms of trigonometric ratios of angles between 0^@ and 45^@ .