Question

answer fast .......................​

Answer 1

Answer:

Step-by-step explanation:

4 sin2 a+ 3sin2 a + 3cos2 a= 4

4 sin2a + 3(1)= 4

4sin2a = 1

sin2a = 1/4

sin a = 1/2

put this value in the first equation

7(1/4) + 3cos2a = 4

3cos2a=4-7/4

3cos2a = 9/4

cos2a = 9/12

cos a = 2/root3

tan a = sin a / cos a

(1/2) / (1 / 2 root 3)

so the answer would be 1 / root 3

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