Question

show that:
tan48°tan23°tan42°tan67°= 1​

Answer 1

Answer:

tan48×tan23×cot(90-49) ×cot(90-23)

Step-by-step explanation:

tan48×cot48×tan23×cot23

tan×cot=1

1×1=1

Answer 2

$\huge \bold{\underline {Answer}}$