Question

Find the Number of Solutions
plssss answer

1. 20 sin 2x=x

2. 40 cos 2x=x
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Answer 1

Answer:

Tính 1: sin x = sin 20

Tính 1: sin x = sin 20 2: tan x = tan 25°

Tính 1: sin x = sin 20 2: tan x = tan 25° 3: cot x = cot 100°

Tính 1: sin x = sin 20 2: tan x = tan 25° 3: cot x = cot 100° 4: sin 2x = sin 40°

Tính 1: sin x = sin 20 2: tan x = tan 25° 3: cot x = cot 100° 4: sin 2x = sin 40° 5: cos 3x = cos 75°

Tính 1: sin x = sin 20 2: tan x = tan 25° 3: cot x = cot 100° 4: sin 2x = sin 40° 5: cos 3x = cos 75°6: tan 4x = tan π/3

Tính 1: sin x = sin 20 2: tan x = tan 25° 3: cot x = cot 100° 4: sin 2x = sin 40° 5: cos 3x = cos 75°6: tan 4x = tan π/37: cot 2x = cot π/12