Question

(2)
If
sin e + sin2 0 = 1,
show that :
cos2 e + cos4 0 = 1.​

Answer 1

Answer:

$\sin(x) \times { \sin(x) }^{2} = 1$

$\sin(x) = 1 - { \sin(x) }^{2}$

SINCE, 1-sin2x =cos2x

$\sin(x) = { \cos(x) }^{2}$

SQUARING ON BOTH SIDES

${ \sin(x) }^{2} = { \cos(x) }^{4}$

Since,sin2x=1-cos2x

$1 - { \cos(x) }^{2} = { \cos(x) }^{4}$

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

HERE THETHA IS CONSIDERED X

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