Simplify the left side of equation so it looks like the right side. cos(x) + sin(x) tan(x) = sec (x)

Step-by-step explanation:

Consider LHS

Apply quotient identies

Multiply the fraction and sine.

Make cos x a fraction with cos x as it denominator.

so

Pythagorean Identity tells us sin squared and cos squared equals 1 so

Apply reciprocal identity.

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

answer is : muchas/tipicas

have a nice day!

~recklesschicken