Math, asked by Hubbie2296, 9 months ago

If cos 40 × cos 50 - sin 40 × sin 50

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Answered by sweetyheree

0

Answer:

above question is of the form cosAcosB-sinAsinB=cos(A+B)

Step-by-step explanation:

A=40

B=50

applying the formula

we get

cos(40+50)

cos(90)

the value of cos90° is 0

have a nice day

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Answered by vinayvsnaidup6t7c5

0

I hope that you got your required answer. Please mark my answer brainliest.

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