Math, asked by Anonymous, 5 months ago

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1) tan 48° tan 23° tan 42° tan 67° = 1
2) cos 38° cos 52° - sim 38° sim 52° = 0

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Answers

Answered by akuldas19
2

Step-by-step explanation:

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Answered by narayanasettyswathi
2

Answer:

1.LHS= tan 48°tan23°tan42°tan67°

=tan48°tan42°tan23°tan67°

=tan48°tan(90-48)°tan23°tan(90-23)°

=tan48°cot48°tan23°cot23°

=1x1

=1

=RHS

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