Question

if sinx+sin²x=1,cos¹²x+3cos¹⁰x(3cos⁸x+3cos⁶x-2=
please give solution for this question
Dont keep uncessary answers​

Answer 1

Answer:

ANSWER

Given: sinx+sin

2

x=1

sinx=1−sin

2

x=cos

2

x

Now,

cos

12

x+3cos

10

x+3cos

8

x+cos

6

x

⇒(cos

4

x)

3

+3(cos

4

x)

2

cos

2

x+3cos

4

x(cos

2

x)

2

+(cos

2

x)

3

⇒(sin

2

x)

3

+3sin

4

xcos

2

x+3sin

2

xcos

4

x+(cos

2

x)

3

⇒[sin

2

x+cos

2

x]

3

⇒1

3

⇒1.

solution

Step-by-step explanation:

please follow me