If sinx – cosx = 0, 0o < x < 90o then the value of (secx + cosecx)2 is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 8
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Understanding Tricks |
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Application Here sinx – cosx = 0 means sinx = cosx So x = 45 |
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Now (secx + cosecx)2 = (√2 + √2)2 = 2 + 2 + 2.√2.√2 = 4 + 4 = 8 |