Question

tan 48° - cot 87° -- cot 42°tan 3°
1) 0
2)-1
3) 1
4)2​

Answer 1

$\huge \mathscr{\orange {\underline{\pink{\underline {Answer:-}}}}}$

3) 1

Step-by-step explanation:

tan 48° tan 42° tan 23° tan 67°

= tan 48° tan(90°-48°)tan 23° tan(90°-23°)

= tan 48° cos 48° tan 23° cos 23°

= (tan 48° × 1/tan48°)×(tan 23° × 1/tan23°)

= 1 × 1

= 1

Hence,

LHS = RHS

Answer 2

Answer:

hope it's help full for u