Explanation:
I'll do the first one:
you will need all three sides
Use pythagorean theorem to find missing sideS
sqrt( 4^2 - 3^2) = sqrt(7) <=====MISSING SIDE LENGTH
Then
S-O-H-C-A-H-T-O-A
SIN = OPP /HYP = 3/4
COS = ADJ/HYP = SQRT (7) / 4
SEC = 1/COS <=====SUB IN THE VALUE ABOVE
CSC = - 1/SIN
TAN = OPP / ADJ = 3/SQRT(7) <===RATIONALIZE AS NEEDED
OR TAN - SIN / COS <===== SUB IN THE VALUES ABOVE
COT = ADJ/OPP = SQRT (7) / 3