Question

5 cos2 60°+4 sec2 30°-tan2 45°\sin2 30°+ cos2 30°

Answer 1

i hope this will usful to u

Answer 2

Answer:

5cos

2

60+4sec

2

30−tan

2

45

⇒

(

2

1

)

2

+(

2

3

)

2

5(

2

1

)

2

+4(

3

2

)

2

−(1)

2

⇒

4

1

+

4

3

4

5

+

3

16

−1

⇒

4

4

4

5

+

3

16

−1

⇒

12

3+64

=

12

67

.