1. cos2 A
2. cos2 B
3. sin2 A
4. sin2 B
sin<sup>2</sup> A
1. (a2 + b2) /2
2. (a2 + b2)
3. 2(a2 + b2)
4. 4(a2 + b2)
2(a<sup>2</sup> + b<sup>2</sup>) <br>
1. -6
2. -4
3. 6
4. 4
-6
1. π/6
2. π/4
3. π/3
4. π/2
π/3
1. π/4
2. π/3
3. π/2
4. 3π/2
π/3
1. m3 <m1<m4<m2
2. m3 < m1<m2<m4
3. m3<m4<m1<m2
4. m3<m4<m2<m1
m3 <m1<m4<m2
1. -7 < λ <1
2. λ > 1
3. 1 < λ < 7
4. -5 < λ <1
-7 < λ <1
1. 1
2. 2
3. 3
4. 4
1
1. 9/10
2. 8/10
3. 7/10
4. 3/5
7/10
1. 1/9
2. 2/9
3. 3/9
4. 4/9
4/9