Plz see my question in attached imagegive me ur fast answer
Plz see my question in attached image
give me ur fast answer
Chinnu , 5 Years ago
Grade 11
Trigonometry> Plz see my question in attached image giv...
1 Answers
Saurabh Koranglekar
Last Activity: 5 Years ago
Dear student
Sin ( 82.5 ) = cos (7.5)
4 *7.5 = 30
Expanding cos 4x we can obtain cos x
Now sin ( 22.5 ) = sin ( 45/2 )
Expanding sin( 2 x) we can obtain sin x
Substitute values and simplify expression
Regards
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