Math, asked by deepika6312, 6 months ago

cos 40°×cos 50° - sin 40°×sin 50°

Answers

Answered by arsh123465

0

Answer:

85 is your answer..............

Answered by akshitasaxena2709

2

Answer:

0

Step-by-step explanation:

cos40°×cos50° = sin(90-40)°×sin(90-50)°

=sin50°×sin40°

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