Question

if sin theta +sin²theta=1 then find value for above​

Answer 1

where is the above question??????????????????

Answer 2

ANSWER

GIVEN : SIN THETA + SIN²THETA = 1

TO PROVE :  COS²THETA + COS^4  THETA = 1

PROOF :

• SIN THETA + SIN^2 THETA = 1 -----------------(1)
• COS^2 THETA + SIN^2 THETA = 1-----------------(2)
• FROM (1) AND (2)

• SIN THETA = COS^2 THETA --------------------(3)
• THEREFORE , SIN^2 THETA = COS^4 THETA-------------------(4)
• COS^2 THETA + COS^4 = 1

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