1.

Ekxpress the following angles in radian measure and centesimal measure : 45^(@)

Answer»

SOLUTION :`because 180^@=pi rad THEREFORE 1^@=pi/(180)rad`
`therefore 45^@=45xxpi/(180)=pi/4rad`
Now, `90^@`= 100 GRADE
`rArr 45^@`=50 grade


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