Question

Find seco, cote, and cos 0, where is the angle shown in the figure. Give exact values, not decimal approximations. seco VIS 13 8 7 cot 0 7 0 cos o П

Answer 1

step 1

Apply Pythagorean theorem to find out the horizontal leg

8^2=x^2+7^2

x^2=64-49

x^2=15

x=√15

the cosine is equal to

cos=√15/8 ------> adjacent side divided by the hypotenuse