If (A + B + C) = 90º, then what is the value of 
?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 1/√2
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Application |
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Given: (A + B + C) = 90º Sin (A/2) Sin [(180 – B – C)/2] + Cos (A/2) Sin (B + C)/2 Put B = C = 0 then A = 90 So Sin (90/2) Sin [(180 – 0] + Cos (90/2) Sin 0 = 1/√2 × 0 + 1/√2 = 1/√2 |