Math, asked by solomonjoseph991, 1 month ago

5. Find the values of cos 400 . cos 500 – sin 400 . sin 500.

Answers

Answered by namratasuravajhala07
0

Answer:

the question is in the form of cosAcosB - sinAsinB

Step-by-step explanation:

so it will be cos ( A+ B )

ie., cos ( 400+500)

cos900

hope it helps you

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