Question

tan 35° =0.7 then tan(-665°)=?

Answer 1

Answer:

Step-by-step explanation:

Hi answer is ---

tan35=0.7

tan(-665°)

= - tan665° [ because tan(-ø)= -tan ø]

= - tan(90°×7+35°)

= - {(-cot35°)}

=+cot35°

= 1/ tan35°

= 1/0.7

= 1.428