yg bisa jawab tolong dong yeah

a. SALAH, karna sin²x = 1 - cos²x

b. BENAR, karna sin²x+cos²x = 1

c. SALAH, karena tan²x = sec²x - 1

d. BENAR, karena cotx itu cosx/sinx↓
= sinx . cotx
= sinx . cosx/sinx
= cosx

e.
sec - sec.sin²x = cosx
secx ( 1 - sin²x) = cosx
secx ( cos²x) = cosx
1/cosx ( cos²x) = cosx
cosx = cosx (BENAR)

f.
sin²x ( 1 + cot²x ) = 1
sin²x (cosec²x) = 1
sin²x ( 1/sin²x) = 1
1 = 1 (BENAR)

g.
tanx = sinx . secx
tanx = sinx . 1/cosx
tanx = sinx/cosx
tanx = tanx (BENAR)

h. .. di foto