Trigoo... Question
Plzz solve
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sec⁴A - tan⁴A (I'm taking theeta as A)
(sec²A - tan²A)(sec²A + tan²A)
(1)(1+ 2tan²A)
= 1+ 2tan²A
hence proved
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saeepalekar5:
Can u plzz reason n explain
because its an identity that sec²A = tan²A + 1
^_^
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Answer:
Step-by-step explanation:
=(sec²Ф + tan²Ф)
=(1)(1+ 2tan²Ф) {sec²Ф - tan²Ф=1 }
= 1+ 2tan²Ф
Hence Proved
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