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Lera25 [3.4K]
4 years ago
13

If sin (2x) = cos (7x), then what is the value of x

Mathematics
1 answer:
kirill115 [55]4 years ago
7 0
We know that

if  <span>sin (2x) = cos (7x)
then
(2x) and (7x) are complementary angles
so
(2x)+(7x)=90----------> 9x=90-------> x=90/9--------> x=10</span>°

the answer is
x=10°
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