Find the value of sin 75o
sin (n+1 )x sin ( n + 2 ) x + cos ( n + 1 )x cos ( n + 2 ) x = _________.
cos x
Sin x
Tan x
sec x
Find the radian measure of 25o
Find the value of cosec ( -1410)o
2
2/√3
√2
1
The radius of the circle whose arc of length 15π c.m makes an angle of 3π/4 radian at the centre is
If tan θ/2 = t, then (1 - t2)/(1 + t2) is equal to
If α and β are acute angle such that tan α = m / m + 1 and tan β = 1/2m+1. Then find the value of α + β.
π
π/4
π/2
π/3
