Question

If sin A + sin²A = 1, then cos²A + cos⁴A is

Answer 1

Answer:

1

Step-by-step explanation:

$\sin(a) + 1 - { \cos }^{2} a = 1 \\ \sin(a) - { \cos }^{2} a = 0 \\ \sin(a) = { \cos }^{2} a$

${ \cos }^{2} a + { \cos}^{4} a = \sin(a) + { \sin}^{2} a = 1$

Answer 2

Answer:

sina+sin2a=11cos411cos4a+cos2a

solvekaro

Step-by-step explanation: