Question

2tan45°+cos45°-sin45°=? Choose the correct alternative answer for multiple choice question.
(A) 0
(B) 1
(C) 2
(D) 3

Answer 1

(C) 2 is the answer

you can get to it by using correct values of given trigonometric ratios.

Answer 2

Solution :

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We know that ,

tan 45° = 1 ,

cos 45° = 1/√2 ,

sin 45° = 1/√2

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Now,

2tan 45° + cos 45° - sin 45°

= 2 × 1 + 1/√2 - 1/√2

= 2

Therefore ,

Option ( c ) is correct.

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