Question

3. if a-{a,b,c,e,u} b-{a,e,i,o,u}, find AUB,AB and b-a

4. Evaluate 1.sin49°/cos 41° 2. sec 63°/cosec 23°

5. Find the value of (tan 45º tan 30° tan 45º tan 60° tan 75°).


please answer this question
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Answer 1

Answer:

3. if a-{a,b,c,e,u} b-{a,e,i,o,u}, find AUB,AB and b-a

4. Evaluate 1.sin49°/cos 41° 2. sec 63°/cosec 23°

5. Find the value of (tan 45º tan 30° tan 45º tan 60° tan 75°).

please answer this question