Question

Hii guys plz answer this question i will mark u as brainlist sinX÷sinX/8 = ​

Answer 1

hi friend

here is your answer

Step-by-step explanation:

Use the formula sin a = 2sin(a/2)cos(a/2) — repeatedly.

Or, to avoid dealing with fractions of x, let x = 8y. Then the numerator becomes:

sin8y=2sin4ycos4y=4sin2ycos2ycos4y=8sinycosycos2ycos4y

…and the denominator becomes simply siny. When you divide numerator by denominator, what’s left is: 8cosycos2ycos4y

…and at this point you can substitute back: y=x/8, etc., to get:

8cosx8cosx4cosx2

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