Question

11th maths practical problems​

Answer 1

Answer:

Mark's as brainlist

Step-by-step explanation:

refer 11th math practical book available in common book store

Answer 2

Step-by-step explanation:

trigonometric functions:

Question:

$sin \: 3x \: = \: sin \: x \\ ans - \: sin3x \: - sinx = 0 \\ sin \: x \: cos2 \: x = 0 \\ sinx = 0 \: or \: cos2x = 0 \\ i \: e \: x = n\pi \: or \: 2x = (2n + 1) \frac{\pi}{4} \\ thanks \:$

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