Math, asked by sabeeha1, 1 year ago

cos20cos40-sin5sin25

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Answers

Answered by kunal421

0

whats this man explain whole

sabeeha1: it's from trigonometric functions (transformations)

Answered by sharu14sp23

6

Answer:

Divide and multiply by 2

=1/2(2cos20cos40-2sin5sin25)

1/2(cos60+cos20+cos30-cos20)

1/2(1/2+√3/2)

1+√3/4

Step-by-step explanation:

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