Question

if Cos A + cos squared equals to 1 then the value of sin square A + sin power 4 a​

Answer 1

ANSWER: 1

Just compare the given equation with the identity.

Answer 2

Answer:

Step-by-step explanation:

cosA+cos²A=1

or,cosA=1-cos²A

or,cosA=sin²A

now,squaring both sides-

cos²A=sin⁴A

Now,the first equation becomes-

sin²A+sin⁴A=1,hence proved