prove that tan40° tan45° tan50°=1.
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Answered by
2
Step-by-step explanation:
= tan40° . tan45°.tan50°
= tan(90-50). tan 45 . tan 50
= cot50°.tan50°.(1)
= tan50°/tan50° . (1)
= (1).(1)
= 1
Answered by
1
Answer:
Step-by-step explanation:
Tan40 . Tan45 . Tan50
Tan(90-50) . 1 . Tan50 [since Tan45=1]
Cot50 . Tan50 [since Tan(90-x) = Cotx]
Both cancelled [ since both are reciprocal]
Answer = 1
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