Question

(v)
5 cos2 60° + 4 sec2 30° - tan2 45°
sin2
'30° + cos2 30°​

Answer 1

Answer:

197/4

Step-by-step explanation:

5 cos²60° + 4 sec²30° - tan²45°+sin²30° + cos²30°

5×(1/2)² +4×(2/root3)² -(1)² +(1/2)²+(root3/2)²

5 × 1/4 + 4× 4×3 - 1 + 1/4 + 3/4

5/4 +48 -1 +1/4 +3/4

9/4 +47

9/4 + 188/4

197/4