(4+tan(x))(3sin(x)-2)=0

Solution

(4 + tan (x)) (3 sin (x) - 2) = 0

x = - 1.32581 \dots + πn, x = 0.72972 \dots + 2 πn, x = π - 0.72972 \dots + 2 πn

Solution steps

(4 + tan (x)) (3 sin (x) - 2) = 0

Solving each part separately

4 + tan (x) = 0 or 3 sin (x) - 2 = 0

4 + tan (x) = 0 : x = arctan (- 4) + πn

3 sin (x) - 2 = 0 : x = arcsin (\frac{2}{3}) + 2 πn, x = π - arcsin (\frac{2}{3}) + 2 πn

Combine all the solutions

x = arctan (- 4) + πn, x = arcsin (\frac{2}{3}) + 2 πn, x = π - arcsin (\frac{2}{3}) + 2 πn

Show solutions in decimal form

x = - 1.32581 \dots + πn, x = 0.72972 \dots + 2 πn, x = π - 0.72972 \dots + 2 πn

sec (2 x) - 1 = 0

sin (2 x) + sin (x) + 2 cos (x) + 1 = 0

csc (x) = \frac{13}{5}

6 csc (θ) + 7 = 0

cos (2 x) + cos (x) = 0, 0 \leq x \leq 2 π