Math, asked by kingofg693, 7 days ago

Find value of cos(3.14
+x)cos(-x).

Answers

Answered by manishmourya087

1

Answer:

LHS =

sin(π−x)cos(

2

π

+x)

cos(π+x)cos(−x)

=

−sinxsinx

−cosxcosx

Step-by-step explanation:

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