10) If Sin A= 16/65 then what will be the Cos A =
(A) 63/65
(B) 64/65
(C) 61/65
(D) 62/65.
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Answer:
A) is the correct option
Step-by-step explanation:
Sin A= 16/65 = P/H
Use Pythagoras theorem:
H² = P² + B²
(65)² = (16)² + B²
B² = 4225 - 256
B² = 3969
B = √3969
B = 63
Cos A = B/H
= 63/65
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