Question

PLEASE ANSWER IT FAST.... ​

Answer 1

Answer:

Step-by-step explanation:

    $7sin^{2}$∅$+3cos^{2}$∅ $=6$

=> 3($sin^{2}$∅$+cos^{2}$∅)+4$sin^{2}$∅ = 6

=> 3 + 4$sin^{2}$∅ = 6

=> 4$sin^{2}$∅ = 3

=> sin∅ = ± $\frac{\sqrt{3} }{2}$

=> ∅ = ± $\frac{\pi}{3}$ (or)  ± $60^{0}$