Question

(iv)
2 tan-45° + cos²30°-sin60°​

Answer 1

the required answer for your question is-2.11

Answer 2

GIVEN:- 2 TAN 45° + COS²30° - SIN60°

TO FIND:- EVALUATING THE VALUE OF TRIGNOMETRIC RELATION

SOLUTION:-

WE ARE GIVEN AS WITH ,

= > 2 TAN 45° + COS²30° - SIN60°

BY TABLE OF TRIGNOMETRIC VALUES

WE FIND THAT , TAN 45 ° = 1

COS 30 ° = _/3 / 2

SIN60 ° = _/3 / 2

PUTTING IN RELATION,

2 TAN 45° + COS²30° - SIN60°

WE GET , 2 × 1 + 3/4 + 3/4

=> 2 + 6/8

WE GET , 11/4

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