Use the cofunction identities to evaluate the expression below without using calculator. sin²20° + sin²27° + sin²70° + sin²63° A)1 C)-1 D)0

Name: Use the cofunction identities to evaluate the expression below without using calculator. sin 2 20° + sin 2 27° + sin 2 70° + sin 2 63° A)1 C)-1 D)0
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The Answer of Use the cofunction identities to evaluate the expression below without using calculator. sin²20° + sin²27° + sin²70° + sin²63° A)1 C)-1 D)0

Use the Cofunction Identities to Evaluate the Expression Below Without