Question

4. If cos A +cos A = 1, then sin’ A + sinA is​

Answer 1

Answer:

the value of Sin2 a + sin4 a is 1 .

Step-by-step explanation:

cos a + cos2 a=1

we have to find the value of Sin2 a + sin4 a

as Sin2 a + cos2 a =1

given,

cos a + cos2 a=1

=cos2 a=1- cos2 a=Sin2 a

Sin2 a+ sin4 a

put the value of Sin2 a

=cos a+cos2 a

=1

Answer 2

Answer:

1 is the correct answer

hope it helps u

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