Math, asked by sandeep846417, 7 months ago

prove thatcos100cos45+sin100sin40=1/2

Answers

Answered by harshitanaidu

4

Answer:

it is the formula for cos(A-B)

so cos (100-40)

cos 60

1/2

hi and have a nice day

Answered by shubha588

5

Step-by-step explanation:

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