Question

tita is acute angle and if sin tita=5/13 the then find value of cos tita​

Answer 1

$12/13 {}^{}$

Answer 2

Answer:

sin ²thita + cos² thita =1

5/13²+cos²thita=1

cos²thita= 1-25/169

cos²thita=169-25/169

cos²thita=144/169

cos²thita=12/13