Math, asked by asmitaghatage25, 6 months ago

find the value of
cos 15degree
 cos15

Answers

Answered by ItzAshleshaMane
6

Answer:

cos15

=cos(45

−30

)

=cos45

cos30

+sin45

sin30

=

2

1

×

2

3

+

2

1

×

2

1

=

2

2

3

+1

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