In a triangle

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

In a triangle ABCABC, the angles at the vertices AA, BB, and CC are α\alpha, β\beta, and γ\gamma respectively. The value of α\alpha is 30∘30^\circ, BCBC is 4 units and ABAB is 4 units. Select the correct option from the following options. (1) A β=100∘\beta = 100^\circ, AC=23AC = 2\sqrt{3} (2) B β=100∘\beta = 100^\circ, AC=43AC = 4\sqrt{3} (3) C β=120∘\beta = 120^\circ, AC=23AC = 2\sqrt{3} (4) D β=120∘\beta = 120^\circ, AC=43AC = 4\sqrt{3}

Related theory

Browse the problem library