Question

7 sin^2O+3sin^2O = 4 then :
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Answer 1

Answer:

7sin ²⁰ + 3 sin ²⁰=4

10 sin²⁰= 4

sin ²⁰= 2/5

hope it helps.

( sorry mate if my answer is incorrect as you haven't mentioned in your question what do you want to know)