Question

if 7sin2theta+3cos2theta=4 then theta
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Answer 1

Answer:

Step-by-step explanation:

7sin2θ+3cos2θ=4

7tan2θsec2θ+3sec2θ=4

7tan2θ+3sec2θ=4

7tan2θ+3=4sec2θ

7tan2θ+3=4(1+tan2θ)

7tan2θ+3=4+4tan2θ

3tan2θ=1

tan2θ=13

tanθ=±13√