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3. trigonometric functions
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Q6 of 62 Page 81

Prove that-

We know that-




Now,


L.H.S





= tan 6x


= R.H.S


Hence, L.H.S = R.H.S…Proved


More from this chapter

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4

Prove that -

(cos x - cos y)2 + (sin x - sin y)2 = 4 sin2[(x-y)/2]

5

Prove that-

sin x + sin 3x + sin 5x + sin 7x = 4 cos x cos 2x sin 4x

7

Prove that-

8

Find in the following:

tan x = –4/3, x in quadrant II

Questions · 62
3. trigonometric functions
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