If (1 + sina)(1+ sinß)(1+ siny)
= (1 - sina)(1 - sinß)(1-siny),
show that each side is equal to +-( cosa cosß cosy). Please answer it seriously if you know how to solve it properly?
Answers
Answer:
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Answer:
If (1 + sinA )(1 + sinB) (1 + sinC ) = (1 - sinA )(1 - sinB) (1 - sinC ),
0
<
A
,
B
,
C
<
π
6
,then each aide is equal to
1). sin A sin B sin C
2). cos A cos B cos C
3). tan A tan B tan C
4). 1