Math, asked by user1690, 16 days ago

evaluate and choose the correct option: 2cos2 60 degree +3sin2 45 degree

Explain

Answers

Answered by itzkillern356
0

Answer:

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Answered by sashiannstephen09
0

Answer:

We know that,

sin45  

=1/  

2

,cos60  

=1/2

sin30  

=1/2 and cos90  

=0

Now,

2cos  

2

60  

+3sin  

2

45  

−3sin  

2

30  

+2cos  

2

90  

 

=2×(  

2

1

)  

2

+3×(  

2

 

1

)  

2

−3×(  

2

1

)  

2

+2(0)  

2

 

=  

2

1

+  

2

3

−  

4

3

⇒  

4

2+6−3

 

=  

4

5

.

Step-by-step explanation:

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