railway RRB JE (CBT I + CBT II) Mock Test 2024 Mathematics Trigonometry Trigonometric Identities

Q पर ΔPQR एक समकोण है। यदि cos P = 3/5 है, तो cos R का मान क्या है?

1
3/4
2
5/3
3
4/5
4
4/3
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