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Find the value of cos (-1710^(@))....

Find the value of `cos (-1710^(@)).`

Text Solution

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`cos(-17010^@)=cos1710^@ [theroforecos(-theta)=costheta]`
=`cos(90^@xx18+90^@)`
`cos90^@=0`
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PATHFINDER-MEASUREMENT OF ANGLES & TRIGONOMETRIC FUNCTIONS -QUESTION BANK
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