Question

if tan 40 is equal to lambda then tan 140 -tan130 by 1 + tan 140 tan130​

Answer 1

Answer:

mark me the brainliest

Step-by-step explanation:

by the formula, tan ( A - B ) = tan A - tan B / 1 + tan A tan B

tan 140 - tan 130 / 1 + tan 140 tan 130​    = tan (140 - 130)

                                                                 = tan 10