Question

Verify that each equation is an identity by showing that each expression on the left simplifies to 1.

Answer 1

how far did you get ?

Answer 2

no where im lost

Answer 3

take left hand side expression,

plugin tanA = sinA/cosA

Answer 4

im still really confused

Answer 5

did they teach you ' tan = sin/cos' yet ?

Answer 6

nope

Answer 7

so im learning it here

Answer 8

ok, dont learn it here. wait until they start them officially
lets do it the known way

Answer 9

ok

Answer 10

they may want you to use the definitions of sin(A)= opp/adj = a/c
and tan(A)= a/b

Answer 11

exactly,

look at above triangle, first find sinA, and tanA