If a.sin 45°.cos 45°.tan60° = tan245° cos60° then find the value of a ?
1). $\frac{1}{\sqrt{3}}$
2). 2
3). 6
4). 7
1. if $cos\pi x$ = $x^{2} - x +\frac{5}{4}$ , the value of x will be
3. If tan(α – β) = sin2β/ (3 – cos2β), then find the value of tanα.cotβ
4. What is the value of cosec $\frac{-7π}{6}$?
5. If sec θ + tan θ = 2, then sec θ is equal to
6. If tanA = 1/2 and tanB = 1/3, then what is the value of tan(2A + B)?
7. The equation $cos^{2}\theta$ = $\frac{(x+y)^{2}}{4xy}$ is only possible when
9. The value of sin2 15° + sin2 20° + sin2 25° + ….. + sin2 75° ---