4 years ago

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

1 answer:

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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