Trigonometric EquationHard
Question
If cos2A + cos2B + cos2C = 1, then ᐃABC is -
Options
A.Equilateral
B.Isosceles
C.Scalene
D.Right angled
More Trigonometric Equation Questions
Solution set of ′θ′ for which sin θ + √3 cos θ ≥ 1, -π < θ ≤ &...Two sides of a rhombus are along the lines, x – y + 1 = 0 and 7x – y ï€ 5 = 0. If its diagonals intersect at (–1,...If tan α = (1 + 2-x)-1, tan β = (1 + 2x+1)-1, then α + β =...Let α, β be such that π and cos α + cos β = , then the value of cos is...If α + β = and β + γ = α, then tan α equals...