Question

3rd is at last (where teta is acute



please say for this answers​

Answer 1

Step-by-step explanation:

√sec^2 + cosec^2

√1/cos^2 +1/sin^2

take l.c.m sin^2cos^2

√sin^2 + cos^2 /sin^2cos^2

√1 /sin^2cos^2

√(1/sinAcosA)^2

square and root cancel

we got

1/sinAcosA

proved