`(2tan3 0^(@))/(1-tan^2 3 0^(@))`

The value of (tan 70^(@) - tan 20^(@))/( tan 50^(@))= .............. A) 1 B) 2 C) 3 D) 0

S o l v e(sin1 0^(@))^(tanx+tan3x)=tan1 5^(@)+tan3 0^(@)+tan1 5^(@)tan3 0^(@), x in (0,pi]

(1+tan1^(0))(1+tan2^(0))(1+tan3^(0)).......(1+tan45^(0)) =?

The value of (3-tan^2A)/(1-3tan^2A)+(3-tan^2B)/(1-3tan^2A)+(3-tan^2C)/(1-3tan^2\ \ C) is a. 1 b. \ 0 c. \ 1+sqrt(3) d. 1-sqrt(3)

(1 - tan^2 45^0)/(1 + tan^2 45^0)

Prove that (1+tan1^(0))(1+tan2^(0))......(1+tan45^(@))=2^(23)

(tan4A+tan2A)(1-tan^(2)3A tan^(2)A)=2tan3A sec^(2)A

Without using trigonometric tables,evaluate each of the following: (2)/(3)cos ec^(2)58^(@)-(2)/(3)cot58^(@)tan32^(@)-(5)/(3)tan13^(0)tan37^(0)tan45^(@)tan53^(@)tan77^(0)

If (1+tan 1^@) (1+tan 2^@) (1 + tan 3^@)...... (1+tan 44^@) (1 + tan 45^@)=N, then find the number of digits in N. (Here log_10 2= 0.301).

The value of tan1^(0)tan2^(0)tan3^(@)tan89^(@) is 0b.1 c.1/2d .not defined