Math, asked by ramadevibalireddy31, 2 months ago

cos(3π÷4+x) - cos(3π÷4-x) =-√2 sinx

Answers

Answered by Anonymous

13

Answer:

cos(

4

3π

+x)−cos(

4

3π

−x)

=cos

4

3π

cosx−sin

4

3π

sinx−cos

4

3π

cosx−sin

4

3π

sinx

=−2sin

4

3π

sinx

=−2(−sin

4

π

)sinx

=

2

sinx

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