Question

Tlong di bantu yaaa,bsok kumpul ni..

1.sin kuadrat X= 3per4
2.tan X = cot X
3.cot X+tanX= 2 sec X

Answer 1

1. sin²x = 3/4
sin x = + 1/2 x √3
sin x = 1/2 x √3
sin x = sin 60
x = 60, 120
sin x = -1/2 x √3
sin x = sin 240
x = 240, 300
HP = { 60,120,240,300}
2. tan x = cot x
sinx / cos x = cos x / sin x
sin²x = cos² x
x = 45, 135, 225, 315
3.  cot x + tan x = 2 sec x
cosx/sin x + sinx/cos x = 2 sec x
(cos²x + sin ²x) / sin x cos x = 2 sec x
1 / sin x cos x = 2/ cosx
1/ sin x cos x = 2/cos x
1/2 = sin x
x = 30, 150