If a + b = 90 degree and sec a equals to 2 by 3 then find the value of cosec b
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Step-by-step explanation:
a+b=90°
a=90°-b
sec a=2/3
1/cos a=2/3
1/cos(90°-b)=2/3
1/sin b=2/3
cosec b=2/3
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