Dear employer,
My name is Alfonso Moya and I am a Civil Engineer. As such I took up to five calculus classes in college and I was a personal tutor for over 2 years in college so I am confident I wont have any problem solving your trigonometry task and for and for sure will have it done for you tonight.
You will find in me somebody responsible, honest and enthusiastic who is ready to get started with your project.
Regards,
Alfonso Moya.