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Tan20°×tan40°×tan60°=3​

Tan20°×tan40°×Tan60°=3

Tan60×tan40°tan20°)

√3((2tan20°)/(1-tan²20))tan20

√3(2tan²20/(1-tan²20°)

2√3((sin²20/cos²20)/((cos²20-sin²20)/cos²20))

2√3(sin²20/(cos²20-sin²20))

2√3(sin²20/(1-2sin²20)

2√3sin²20/2cos²40

√3

step-by-step explanation:

for volume, add base x height x width

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.