Question

2tan square 45 degree + cos square 30 degree minus sin square 60 degree​

Answer 1

φµεรƭเσɳ:-

2tan square 45 degree + cos square 30 degree minus sin square 60 degree

➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡

αηsωεя:-

The value of 2 tan² 45° + cos² 30° - sin² 60° is 2

Given equation :

2 tan square 45 degree +cos square 30 degree- sin square 60 degree

The equation can be written as :

2 tan² 45° + cos² 30° - sin² 60°

Now we know,

tan 45° = 1

cos 30° =

sin 60° =

Substituting the values in the equation,

= 2 ( 1 ) ² + ( ) ² - ( ) ²  

= 2

Hence,

The value of 2 tan² 45° + cos² 30° - sin² 60° is 2

Answer 2

2tan square 45 degree + cos square 30 degree minus sin square 60 degree

now write the values

tan 45 = 1

cos 30 = root3/2

sin 60 = root3/2

2(1) + (root3/2)^2 - (root3/2)^2

so the final answer is 2