Question

Sec ²60° - tan60°
sin 230 + cos² 30°​

Answer 1

$\huge \fbox \purple{❥ Answer}$

As we know that :-

» sin30 = 1/2

» tan60 = √3

» cos60 = 1/2

» sec30 = 2/√3

________________

Now,

=> 2sin²30.tan60 - 3cos²60.sec²30

Put the all values, we get :-

=> 2(1/2)²×√3 - 3(1/2)².(2/√3)²

=> 2×1/4×√3 - 3×1/4×4/3

=> √3/2 - 1

__________[ANSWER]

Answer 2

Answer:

As we know that :-

» sin30 = 1/2

» tan60 = √3

» cos60 = 1/2

» sec30 = 2/√3

________________

Now,

=> 2sin²30.tan60 - 3cos²60.sec²30

Put the all values, we get :-

=> 2(1/2)²×√3 - 3(1/2)².(2/√3)²

=> 2×1/4×√3 - 3×1/4×4/3

> √3/2 - 1