Question

Find the value of tan 56° – tan 11º – tan 56° tan 11º.​

Answer 1

Answer:

Using the facts that sin(45) = cos(45) = 1/(sqrt(2))

(sin(11) + cos(11))= sqrt(2){ sin(11)cos(45) + cos(11)sin(45) } = sqrt(2)(sin(56))

(cos(11) - sin(11)) = sqrt(2){ cos(11)cos(45) - sin(11)sin(45) } = sqrt(2)(cos(56))

Dividing the two identities, (sin(11) + cos(11))/(cos(11) - sin(11)) = tan(56)

Answer 2

Answer:

Paki answer nalang HAHAHA