Cosine Rule is also known as
A). Cosine Area
B). Sine triangle
C). Cosine Triangle
D). Cosine Formula
1. $sin^{2}5^{0}+sin^{2}6^{0}+........+sin^{2}84^{0}+sin^{2}85^{0}$ =
2. .The least value of $tan^{2}x+cot^{2}x$ is
3. If 2ycos θ = x sin θ and 2xsec θ – y cosec θ = 3, then the value of x2 + 4y2 is
4. If cos (10° 7’ 32”) = a, then the value of sin(79° 52’ 28”) + tan (10° 7’ 32”) is –
6. What is the value of $Sin 30^{0} - \sqrt{2} Cos 30^{0}$?
7. Considering 0° < x < 180°, angle of sin x = 0.2385 is