If Sin A = 4/5, Cos = 45°= ?

1.	If Sin A = 4/5, Cos = 45°= ?
Answer» ANSWER: A is in QI, so cosA=+√1−(45 )2=35 and B is in QIII, so sinB=−√1−(−513) 2=−1213 so.

Answer»

ANSWER:

A is in QI, so cosA=+√1−(45 )2=35 and B is in QIII, so sinB=−√1−(−513) 2=−1213 so.

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If Sin A = 4/5, Cos = 45°= ?​

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If Sin A = 4/5, Cos = 45°= ?