Question

find the value of sin²60degree + cos² 60degree ​

Answer 1

Answer:

Yep

Step-by-step explanation:

sin  

2

60°+cos  

2

60°=(  

2

3

​  

 

​  

)  

2

+(  

2

1

​  

)  

2

 

⇒  

4

3

​  

+  

4

1

​  

=  

4

4

​  

=1

Answer 2

Sin60⁰ = $\sf\dfrac{√3}{2}$

Sin²60⁰ = $\sf\dfrac{3}{4}$

Cos60⁰ = $\sf\dfrac{1}{2}$

Cos²60⁰ = $\sf\dfrac{1}{4}$

Sin²60⁰+Cos²60⁰ = $\sf\dfrac{1}{2}$ + $\sf\dfrac{1}{4}$ = $\sf\cancel\dfrac{4}{4}$ = 1