What is the value of Sin 30o + Cos 30o - tan 45o ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. (√(3) - 1)/2.
| Understanding/Application |
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Sin 30o + Cos 30o - tan 45o sin30 = 1/2 cos30 = √3/2 tan45 = 1 |
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Sin 30o + Cos 30o - tan 45o = 1/2 + √3/2 - 1 = (1 + √3 - 2)/2 = (√3 - 1)/2 |