P
3) In figure, ZQ=90°,
ZR=0, PQ=12,
QR = 5, PR = 13.
Find the value of :
cos Ꮎ .
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Given :-
- ∠Q = 90°
- ∠R = Ꮎ .
- PQ = 12
- QR = 5
- PR = 13 .
To Find :-
- cos Ꮎ = ?
Solution :-
we know that,
- cos Ꮎ = Base / Hypotenuse .
- side opposite of Ꮎ is perpendicular .
so,
→ cos Ꮎ = B / H
→ cos Ꮎ = QR / PR
→ cos Ꮎ = (5 / 13) (Ans.)
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