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(2tan30o)/(1+tan^2 30o) is equal to sin6...

`(2tan30o)/(1+tan^2 30o)` is equal to `sin60o` (b) `cos60o` (c) `tan60o` (d) `sin30o`

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(2tan30o)/(1-tan^2 30o) is equal to cos60o (b) sin60o (c) tan60o (d) sin30o

Choose the correct option and justify your choice :(i)(2tan30^(@))/(1+tan^(2)30^(@))(a)sin60^(@)(b)cos60^(@)(c)tan60^(@)(d)sin30^(@)

(1-tan^(2)45o)/(1+tan^(2)45o) is equal to tan90o(b)1(c)sin450(d)sin0o

Verify that: sin60o=(2tan30o)/(1+tan^(2)30o)=(sqrt(3))/(2) (ii) cos60o=(1-tan^(2)30o)/(1+tan^(2)30o)=(1)/(2)

frac(sin 30^@. cos 45^@)(tan60^@ is equal to

(tan60^@)/(sin60^@+cos30^@)

(tan30^(@)cos ec60^(@)+tan60^(@)sec30^(@))=?

Find the value of sin^(2)30^(@)+cos^(2)60^(@)+tan45^(@) .

Evaluate each of the following: (sin^2 45o+cos^2 45o)/(tan^2 60o) (ii) (sin30o-sin90o+2cos0o)/(tan30otan60o)

Evaluate the following expressions: 2sin^2 30otan60o-3cos^2 60osec^2 30o (ii) "c o s e c"^2 30osin^2 45o-sec^2 60o (iii) tan60ocos e c^2 45o+sec^2 60otan45o

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