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If alpha , beta are complementary angles...

If `alpha , beta` are complementary angles , `sin alpha = 3//5` , then ` sin alpha cos beta - cos alpha sin beta `=

A

`(7)/(25)`

B

`- (7)/(25)`

C

`(25)/(7)`

D

`- (25)/(7)`

Text Solution

Verified by Experts

The correct Answer is:
B
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