Question

Tan35.tan40.tan45.tan50.tan55

Answer 1

Step-by-step explanation:

= tan35° × tan40° × tan45° × tan50° × tan55°

= tan35° × tan40° × tan45° × tan(90°—40°) × tan(90°—35°)

=tan35° × tan40° × tan45° × cot40° × cot35°

=tan35° × tan40° × tan45° × (1÷tan40°) × (1÷tan35°)

=tan45°

=1

Answer 2

Answer:

1

Step-by-step explanation:

given

Tan35.tan40.tan45.tan50.tan55

tan35.tan40.tan45.tan(90-40).tan(90-35)

tan35.tan40.(1).cot40.cot35

tan35.cot35.tan40.cot40.1

1.1.1

=1

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