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If ( cos 3A+ sin 3A)/( cos A - sin A )=1...

If `( cos 3A+ sin 3A)/( cos A - sin A )=1-k sin 2A ` , the value of k is

A

`-2`

B

2

C

3

D

4

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The correct Answer is:
A
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  10. If A is in the III quadrant , 3 tan A-4=0 " then " 5 sin 2A + 3 sin A ...

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  11. If ' theta ' is in the III quadrant then sqrt(4 sin^(4) theta + sin^(...

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