Question

Evaluate:2sin68/cos22 - 2cot15/5tan75 - 3tan45 tan20 tan40 tan50 tan70/5

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Answer 1

Step-by-step explanation:

• 2[sin(90-22)] / cos 22 - 2 [cot (90-75)] / tan 75 - 3 × 1× tan(90-70)× tan(90-50) × tan 50× tan 70 / 5

• 2 cos 22 / cos 22 - 2 tan 75 / tan 75 - 3 ×1×cot 70 × cot 50×tan 50 × tan 70/5

• 2 - 2 -3/5

• -3/5 answer