prove that 1/1+sinA + 1/1-sinA=2sec²A
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Answered by
3
Answer:
1/1+sinA + 1/1-sinA
=1-sinA+1+sinA/1-sin²A
=2/cos²A
=2secA
Answered by
0
Answer:
1/1+sinA+1/1-sinA.
= 1-sinA+1+sinA/(1+SinA)(1-sinA).
=. 2/1-sin²A.
=. 2/cos ²A
=. sec²A
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