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निम्न को सुमेलित कीजिए - {:("(a) sin "...

निम्न को सुमेलित कीजिए -
`{:("(a) sin "37^(@),"(P) "-(3)/(5)),("(b) cos" 127^(@),"(Q) "(3)/(5)),("(c) tan "307^(@),"(R) "-(4)/(3)),("(d) cos "307^(@) ,"(S) "(4)/(3)),("(e) cos "(-53^(@)),"(T) "(3)/(5)):}`

लिखित उत्तर

Verified by Experts

The correct Answer is:
`(a) to Q, (b) to P, (c) to R, (d) to Q, (e) to Q`
(a) ` sin 37^(@) = (3)/(5)`
(b) `cos 127^(@) = cos (180 ^(@) - 53^(@)) = - cos 53^(@) = - (3)/(5) "since" , cos (180^(@) - theta) = - cos^(theta)`
(c) `tan 307^(@) = tan (360 ^(@) - 53^(@) ) = - tan 53^(@) = - (4)/( 5)`
(d) `cos 307^(@) = cos (360^(@) - 53^(@)) = cos 53^(@) = - (3)/(5)`
(e) `cos (- 53^(@)) = cos 53^(@) = (3)/(5)`
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