What is the value of Sin 30° + 2 Cos 30°?
sin 30° + 2 cos 30°
⇒ 1/2 + 2(√3/2) (? cos 30° = √3/2, sin 30° = 1/2)
⇒ 1/2 + √3
⇒ (1 + 2√3)/2
2. Find the value of (p + q)2, if p + q Cot3 α = Cot α.Cosec α and q = p tan α.
5. The value of tan 315° cot (405°) is equal to
6. What is the value of cosecA/√(cosec2A – 1)?
7. The distance between the points (4, 8) and (k,-4) is 13. What is the value of k?
8. What is the value of [1 – sin (90 – 2A)] / [1 + sin (90 + 2A)]?
10. If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then $x^{2}+y^{2}$ is equal to