Question

eluvate the following 2tan²45+cos²30-sin²60​

Answer 1

Answer:

2 tan² 45° + cos² 30°–sin² 60°

=2tan²45°+cos² 30°–sin²(90°-30°)

=2×1²+cos²30°-cos²30°,because sin(90-θ)=cosθ

=2,Ans.

Answer 2

Answer:2

Step-by-step explanation:  tan45=1,cos30=√3/2,sin60=√3/2