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एक तीव्र कोनांत सायन 5/13 आसता. ताचो कोसाइन सोदून काडात.

A5/12
B8/13
C13/12
D12/13
Answer & Solution
Correct answer: D. 12/13
Cos θ हें 1 चें वर्गमूळ - 25/169 = 144/169, जें 12/13 आसा.
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