Trigonometry
Trigonometric Equations
0 ≤ x ≤ 2 π, solve the equation 4 sec x +8=0

Step-by-step explanation:

4 sec x=-8

secx=-2

cos x=-1/2=-cos π/3=cos(π-π/3),cos (π+π/3)

=cos (2π/3),cos(4π/3)

x=2π/3,4π/3

x = 2π/3, 4π/3

Step-by-step explanation:

4secx = -8

secx = -2

cosx = -½

basic angle = π/3

x = π - π/3, π + π/3

x = 2π/3, 4π/3

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

step-by-step explanation:

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: