# sec 2550

1.  √6-√2

2.  - √6+√2

3.  √6+√2

4.  -√6-√2

4

-√6-√2

Explanation :
No Explanation available for this question

# cos 150- cos 750 =

1.

2.  √3/2

3.  1/2

4.  1/√2

4

1/√2

Explanation :
No Explanation available for this question

# tan 150+tan 750 =

1.  1

2.  2

3.  3

4.  4

4

4

Explanation :
No Explanation available for this question

# tan 750- cot 750

1.  2√3

2.  3√2

3.  3

4.  1

4

2√3

Explanation :
No Explanation available for this question

# tan 700-tan 200

1.  tan 500

2.  2 tan 500

3.  tan 600

4.  2 tan 600

4

2 tan 500

Explanation :
No Explanation available for this question

# cos2 450- sin2 150

1.  0

2.   1/√2

3.  √3/2

4.  √3/4

4

√3/4

Explanation :
No Explanation available for this question

# sin2 52 (1/2)0- sin2 22 (1/2)0=

1.  √3+1/4√2

2.  √3-1/4√2

3.  (3+√3)/4√2

4.  (3-√3)/4√2

4

√3+1/4√2

Explanation :
No Explanation available for this question

# The value of sin θ / ( sin2(π/8+ θ/2)- sin2(π/8-θ/2)) =

1.  2

2.  1/2

3.  √2

4.  none

4

√2

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  2

4.  1/2

4

0

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  2

4.  1/2

4