'In `/_\P Q R` , right-angled at `Q ,\ P Q=3c m` and `P R=6c m` . Determine `/_P` and `/_R` .'

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"In `/_\P Q R`
,
right-angled at `Q ,\ P Q=3c m`
and `P R=6c m`
. Determine
`/_P`
and `/_R`
."

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