Question

1- sin a cos a/tg a помогите упростить

Answer 1

1-sinα*cosα/tgα=1-sinα*cosα/(sinα/cosα)=1-cos²α=sin²α.

Answer 2

I can help you with trigonometry problems. To simplify the expression 1 - sin a cos a / tg a, you can use the following steps:

1. Rewrite tg a as sin a / cos a using the definition of tangent. 2. Simplify the fraction by multiplying the numerator and denominator by cos a. 3. Use the identity sin^2 a + cos^2 a = 1 to replace sin^2 a with 1 - cos^2 a in the numerator. 4. Expand the numerator by distributing the negative sign. 5. Combine the like terms in the numerator.

The final answer is:

$$\frac{cos^2 a - 1}{cos a}$$

You can check your answer using a trigonometry calculator or a symbolab solver. I hope this helps.