Question

2. Show that:
(1) tan 48° tan 23° tan 42° tan 67° = 1​

Answer 1

See

Show that:

(1) tan 48° tan 23° tan 42° tan 67° = 1

Answer 2

Answer:

Step-by-step explanation:

tan48 = cot 42 = 1/tan42

tan23 = cot 67 = 1/tan67

1/tan42 x tan42 x 1/tan67 x tan67

They get cancelled out, and net result is 1

Hence Proved

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