Question

If sin thetha=11/61 , find the value of cos thetha using trigonometric identity​

Answer 1

Answer:

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Answer 2

Answer:

√60/61

Step-by-step explanation:

trigonometric identitiy:

sin²thetha+ cos ²thetha= 1

cos² thetha = 1- sin ² thetha

cos² thetha= 1- (11/61)²

cos² thetha= 1 - 121/3721

cos² thetha= 3721- 121/3721

cos² thetha= 3600/3721

cos thetha= 60/61

here is the answer to the question.