Thread: Some trig questions part 2

Please help:

4) sin-1 (square root of 5 over 3)
5) cot pie over 12
6) sint= 1/4. 0<t< pie over 2 and sin t is given.

Originally Posted by donnyB

Please help:

4) sin-1 (square root of 5 over 3)
5) cot pie over 12
6) sint= 1/4. 0<t< pie over 2 and sin t is given.

4) sin-1 (square root of 5 over 3)

Do you mean

5) cot pie over 12

You should find 1st, then find its reciprocal.
You can you your scientific calculator
or
where is a special angle.

6) sint= 1/4. 0<t< pie over 2 and sin t is given.

That means it is in the 1st quadrant.