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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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Application +4 | -1
If in a Δ  ABC  a=5,  b=4,  A=π2+B\Delta \;ABC\;a = 5,\;b = 4,\;A = \frac{\pi }{2} + B, then CC
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Correct option: B
is  tan⁡−1(940)\mathrm{is\;}{\tan ^{ - 1}}\left( {\frac{9}{{40}}} \right)
Option B is  tan⁡−1(940)\mathrm{is\;}{\tan ^{ - 1}}\left( {\frac{9}{{40}}} \right) is correct because it is found by using the sine rule and trigonometric identities to find angle C.

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