Determine x in each where x ∈ (0°;90°)

Determine x in each where x ∈ (0°;90°)

1)  7 cos x = 4

2)  8sin(3x + 30°) - 8 = 0

in Trigonometry Answers by Level 1 User (120 points)

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1 Answer

1) cos(x)=4/7, x=55.15°.

2) 8sin(3x+30°)=8, sin(3x+30°)=1, 3x+30°=90°, 3x=60°, x=10°.
by Top Rated User (1.2m points)

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