pls evaluate this sum from Trigonometry
2cos0° - 2sin²45° + sin90° + tan45°
Share
pls evaluate this sum from Trigonometry
2cos0° - 2sin²45° + sin90° + tan45°
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
3
Step-by-step explanation:
Cos0°=1
Sin45°=1/√2
Sin90°=1
Tan45°=1
Let us substitute
[tex]2(1) - 2( { \frac{1}{ \sqrt{2} }) }^{2} + 1 + 1[/tex]
[tex] = 2 - 2 \times \frac{1}{2} + 1 + 1[/tex]
[tex] = 2 - 1 + 1 + 1[/tex]
[tex] = 2 + 1[/tex]
[tex] = 3[/tex]