Question

if Tan theta is 20/21 find cos theta-sin theta+2/cos theta+1+ sin theta​

Answer 1

Answer:

3/7

Step-by-step explanation:

Tan theta = 20/21

h= O2 + A2

Let, O= 20K

A = 21K

H2 = (20k)2 + (21k)2

H2 = 841

H = 29k

sin theta = o/h

sin theta = 20k/29k

sin theta = 20/29

cos theta = a/h

cos theta = 21k/29k

cos theta = 21/29

1-sin theta + cos theta÷ 1 + sin theta + cos theta

1 - 20/29 + 21/29 ÷ 1 + sin theta29 +21/29

29-20+21/29 ÷ 29+20+21/29

30/29 ÷ 70/29

30/70

3/7