Question
The value of (sin23° / cos67°) + (cos71° /
sin19°) is:Solution
(sin23°/cos67°) + (cos71°/sin19°) => sin (90° - x) = cos x => cos (90° - x) = sin x So, => sin( 90° - 67°)/cos67° + cos( 90° - 19°)/sin19° => cos67°/cos67° + sin19°/sin19° => 1 + 1 = 2
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